My Little Pony: Friendship is Magic - Image #238,055

The solution is simple

We kill the Pinkie Pie

Wow, I'm between a rock and a hard place above pit.
I could break the promise but she'll likely come after me and kill me,
I'd be too gross out to try to help her, But i could try and kill her
but it would make me a muder and make a sad.
So i'm screwed no matter what.