I think the bouncers were intentional...Think about it:

If an object is below, you can't really hit it with the Eblaster. That's where the bouncers come in.

WC is a bug, because when you stop your mask goes away, making you invulnerable. however, when you double jump while buttstomping, you move up, and when your mask comes back, you are in the mask above and Volia! You are in the wall.