I meant the areas like ramps in which you go down and than lose the vertical alignment of the character ("it falls on its face", but "ragdolls" is probably a better term lol).
But, if it's intended, than it's intended! It's just a feature that I personally got frustrated with. I bet many others would say it's a good feature!
I like the idea of informing that you'll lose the control, maybe an icon above the character head?
Good work nonetheless!