#3 - June 21, 2009, 11:21 p.m.
No, a Game Master is not controlling your voidwalker.
It is important to understand how some pets work as well as some mobs. In certain cases when you send your pet after a mob your pet will try to get behind the mob or the mob will continually try to get behind your pet, this triggers a fun little dance that will sometimes cause both of them to run farther away from you.
Part of the challenge of playing a class that has a pet is remaining in control of that pet. If it starts to do this dance call it back into range.