Full Disclosure: I like KB and have NO insider information.
Maybe it's been covered elsewhere but, my understanding is that Jimmy Walsh did NOT have a contract with Tuttle's team.
KB offers JW a contract (plus, no doubt a PILE of guaranteed money) and an opportunity to have an A+ budget with a long term professional team- what would YOU do?
Ballsy leap-of-faith on KB's part too. (Correct me if I'm wrong-JW didn't make his bones as a FC tuner?)
Handshakes are great but the willingness to "put-it in- writing" (and Dexter probably SHOULD have at the beginning of 2007) are the way grown-ups do things.