Re: overmentalizing
"Congratulations. Due to his highly effective interrogation techniques, Mindworm has been drafted to special service. He's going to be busy for the next few years going through Gitmo, federal prisons, everyone potentially connected to any missing persons cases, and everyone involved in the last few rounds of financial meltdown. While he's busy, what would you like your next character to be like?"
If you want to keep him in the game, let him do the stuff, but don't have the rest of the campaign sit around while he does it. "OK, you're partway through the scanning of thug #2, and there's another emergency. Do you want to sit in a corner writing up questions, or would you like to come along with the rest of the team?" "After finishing with thug #4, you notice that you have new messages on your phone. Apparently you forgot your date and forgot to go to work, and missed the team calling you for a bank robbery. You're also very tired and hungry, and notice that it's now Thursday. Looking in the back room, you notice that your teammates have deposited another half-dozen thugs for your queue. Maybe you should feed them too. Or at least put up some air freshener."