No Control After Death

I’m trying to make a game where your character is a ball and it rolls down a hill, I noticed when you die, your character is able to roll around freely if there’s a sloped angle, what is causing this, and can I use this as my character’s forward momentum or do I have to provide another force?

I’ve tried breaking joints, the only the that worked so far is cloning the humanoid, which makes you lose control over the character, so it wouldn’t work.

gravity is making the ball roll down the slope or you just never stopped control once the character dies