There were too many global admins in one channel, for too long. I think that's why you were demoted. You cant just expect to sit in a locked channel all day and not have consequences. As silence has said, he's going to be looking at the admins who havent been demoted, to see if they arent doing a good enough job. If they arent, there will be consequences.
Ts admin isnt just for banning your mates, it's for:
*Sorting out mic spammers
*Being available to contact in case of stuff like this (Being in a locked channel isnt availability, even if you can pm (Admin could just carry on playing game instead of looking at it)
*Making co leaders jobs easier so they dont have to stress over escalated problems.
*Most important however, is making sure xG ts is a nice place for members (and guests) to be.