http://www.balupton.com/blogs/b2evo?title=edit_permissions_control_plugin&more=1&c=1&tb=1&pb=1 it is listed on the plugins directory as well.

Worked great after the fix, thanks a lot!
I'm surprised that this wasn't included in the release.

Well it's been fixed in b2evo v2.0 I know that much, the problem with coding big projects is that you need to keep working with old code, like you can't just do a rewrite whenever you want, and in this instance the permissions is something that requires a rewrite. (To be implemented within the core of b2evo that is).