So I found a new mod on XB1 today. Said it would let me transform into anything. Cool. Well it doesn't work for one. When I set the form and transform all it does it transport me into a first person view high in the air. Can't walk or move, but can use actions such as spells. Well I used it in a ruin, and it turned me into a bear. I thought "Cool" One issue. There was unseen enemies (but red dots on the radar) attacking me. After I died and reloaded, my collision detection was completely broken.

I can't walk on the ground

I can walk through walls, the floor, people, dragons, wolves, you name it. I can even walk into the sky as if on a rope. So I deleted the mod...and I still have the issue. Worst yet, it seems to have affected my core game. Across all saves and characters, and even new games, the collision detection is completely gone.

you have encountered one of the dangers of modding.. if after uninstalling it the issue remains, even with brand new characters, your going to have to reinstall

You mean like reinstall the whole game!? Lose all my progress and good mods?

if starting a new character does not fix the issue, then yes..

Wow Ok I want to try everything before that. No one knows how to fix collision detection on console?

There's a mod that clears things up and reverts you to vanilla settings - I can't recall its name. It might not be any good for you here, but give it a go before you uninstall. But yeah you're probably going to lose your character progress.

Once I use that mod can I enable my other mods again?