Help! Crazy chin that has gotten over gate once and is now a fearless plunging jumper

I need help finding new ways to confine chin to play area. It's about 2.5 feet tall and he has conquered it twice. But in between those, he has fearlessly plunged himself into the side of it, and I fear he's going to hurt himself. Little stinker! I just want him away from the potential yuck under the toilet and away from chewing my cabinets.... Darn smarty butt. I made it 2 months before he went all camicaze jumper chin.....