He's fine if he doesn't use it or release it for anything >.>
I don't know why people make a huge deal of people editing their model if they aren't doing anything with it.
I know I wouldn't care as long as I got some credit or if they were just using it personally...
I guess it is courteous though...
For something as small as testing out a program, permission shouldn't be required. After all, he could say it was his model and we'd never know.
Anyways, so how'd you get the animation part to start working?