I have replicated the bug. It's one of those, I have no idea how i didn't come across this while play testing it for the 30th time style of bugs. I'll get this fixed.
I also platformed myself into the ceiling (riding platform)
I did manage to free myself by putting a platform underneath myself and aiming down, so I'd say this is more amusing than anything, it did take a moment to get free.
I also platformed myself into the ceiling (riding platform)