The Official Super Smash Bros. Brawl Project (Now at Phase 2!)

[Random Talking Bush]

I don't know what you did, but whatever it was, it fixed it!

Ah, so it worked then. Good.

What I did was I re-imported the DAE file, exported the rigging envelopes, collapsed the mesh, and re-applied the rigging using the exported envelopes. Afterwards, the mesh didn't shrink down/rotate when I unchecked the Skin modifier, so I was pretty sure that's what fixed it.