It sounds like somebody doesn't like Paul McBeth.
The rules are that anything dead and unattached CAN be moved.
It has nothing to do with McBeth. It's about the fact that the log was obviously intentionally placed where it was so it should've been considered course equipment. However, as it was stated by another previously, it should've been staked or marked. In a money game I understand the logic, but I dont agree with the action. Anyone in my group (casually) would get a good razz from me had they made the same move.