EMPTY HOP LOW gdi I'm an idiot. I'ma try this
I presume that you just entered the qcf, went juuusst over their head, and then hit lk, which would make you blitz backwards from the direction he was originally facing.. Yeah, his J.HP is pretty weird (and awesome).
Inputs for specials are based on the direction your character is facing. So crossup jHP from 1P to 2P side still needs the 1P side input.