Just have Sabin appear out of nowhere in the middle of the fight, suplex the train so hard it disappears into the ground, and then it continues from there.

In all seriousness though, at the end of the day this is just a meme started by a move used in the game and how awesome the concept of suplexing a train was. If SE does add such a thing to the fight then it'll obviously be fanservice, but I wouldn't get my hopes up if I were you guys.