Yeah, I have never used Yahoo so I didn't know what the setup was there. If everything was as you said it, then no, he shouldn't kick the dude out.
One clue which I didn't yet mention was that the Commish locked the other guys team, a day after that guy gave the Commish's team his first loss of the year. As a result of that locking, the other guy couldn't pick up a TE to replace his injured TE for the following week, and he lost his game that week by 5 yards....
In the end I think his team missed the playoffs by that loss.......???
Within a week after the league championship, the Commish posted the other guys team as being available....
When asked for a reason, or the opportunity to vote on that owners ouster, the Commish gave none and just said that owner is gone.....
When pressed again by other owners, all the Commish would say was that the owner was gone and he had heard via PM from a few other owners who also wanted that owner gone???