No. This is no Deus Ex Machina. This is much worse than that.
One minute sunset shimmer has our heroines on the ropes with no chance of getting out of the current situation they're in, and the next minute she basically pulls the other elements (and the current one) right out her ass. I mean, seriously! If she could just have done that, why couldn't she just have done that right from the outset?!
Seriously, that "solution" pretty much makes the whole trip into the human world completely pointless (well more than it already it). I mean, if Twilight could just magic poof the elements back, why did she not just do that from the very beginning?! According to the ending, this movie should have been over in the first 5 minutes:
Sunset: Sorry it had to be like this! (goes into the portal)Twilight: Girls, assemble!
(Girls:) (does the element of harmony thing) TASTE THE ASSPULL MOTHER FUCKER!!
Twilight: (has her crown back) Well that was easy.
To paraphrase TheSpoonyOne's review of Final Fantasy VIII:
(And the part where he's referring to with the Ragnarok appearing out of nowhere actually seems pretty coherent compared to this.)
Not to mention the fact that a teenage zombie army taking over anything other than a small town for about one day at the very best before the military shows up (what she didn't think that world didn't have a military, or militaries? I mean if they have computers and cell phones and cars and such and its roughly based on a human world it's a pretty safe bet that they also have guns, tanks, rockets, armored vehicles, fighters, bombers, nuclear weapons, etc. Did Sunset do ANY sort of research about the weapons, tools, politics, etc of this world while she was over there at all?!) is so absurd and so implausible that it's just utterly ridiculous. Even with her magic (which by the way, I have my suspicions that it doesn't make her bulletproof... or at the very least explosion proof. Let alone Nuke-Proof.) She still has to worry about pretty much everything this world could throw at her, which they will.
Not to mention, even if she gets that far, there's rebellions and coups to worry about. Not to mention that I hope she has some sort of economic plan ready to go. I mean, even if everyone's your slave you still have to have a plan for things like commerce and having to worry about feeding everyone and such.
And yes, her plan is simply to invade Equestria, but guess what? She wouldn't fare that much better there either. Not only does she have... again, a teenage zombie army from ONE SCHOOL, that has, for starters, no combat skills, no weapons, and no higher brain functions to form any kind of short term tactics or strategy, and not to mention will be most likely suffering from the same cross-body problems that twilight suffered from when she first entered the human world (good luck teaching everyone how to move their legs, use magic, fly, etc. in the span of about 5 minutes at best) against the entire equestrian army, and the crystal empire's army. Not to mention any allies in any other countries they might have.
"I Have Magic!!" Well guess what? So does 1/3rd of equestria. Not to mention so does Celestia. And Luna. And Cadence. And the Crystal Empire as a whole (they killed sombra without the elements after all, and odds are he was a lot more powerful and had more experience at this than you do, Sunset.) And not to mention there's the other 5 elements. I mean, we all remember how well that went when twilight tried to use her single element more or less alone against Discord when the others weren't working... it didn't go very well. And speaking of Discord, even you don't take his reformation into account I highly doubt he has any interest in playing second banana to sunset shittmmer.
Are you REALLY telling me that just because Sunset has that SINGLE element that she is now much more powerful than ANY of those, let alone ALL Of those?!
And while we're at it, what does she think will happen when she crosses over? What, does she really think she'll keep her power when she jumps through? Well if that was the case, why did she even have to go to the high school world to begin with (with was fucking stupid by the way)? Why not just use the crown right off the bat? I mean, sunset said it herself: "Do you know what happens to the elements when they cross over to the other world" (or something like that.) Which means there's NO guarantee that the element will even WORK for her when its back in Equestria.
ARRGGHHH... This thing just has so many plot holes that are so big you could drive the titanic through them.
Basically it shows that the writers had no faith or no real interest in this clunker of a film at this point, and just wanted to get it over with, and instead of good writing and plot consistence, they basically rely on a game of "find the background pony" and other cultural references to keep the simpler minded bronies happy.
Newsflash though: Wheres Waldo games, pop songs, and other gimmics are not a replacement for good writting.