Occam's Razor is clear here. Crossing dimensions is neigh impossible, he must simply be insane. Though, try as he might to acclimate he can't help but question the sanity of these ponies and their odd social practices.

So hey, people make mistakes right? Well, I didn't mean to summon the otherworldly horror, honest! Well, I did, but it wasn't supposed to go crazy! Just grant me power... wait, that sounds awful actually... crap.

Twilight recieves orders to try out a bar, but what is Celestia really planning for her?