Free agent signing began in the NBA today, and it’s already dogs and cats living together, mass hysteria. As per usual, talented ballers are fleeing en masse from the Clippers, with Elton Brand signing in Miami, Corey Maggette going for Utah, and Andre Miller heading for Denver. (The Clips can possibly stave off the defection by matching the new contracts.) Elsewhere, Juwan went to Orlando, Nesterovic to San Antonio, and Kandi Man to the Wolves. (So far, as New Yorkers feared, the Knicks haven’t picked up anybody.) And, of course, the Mailman and the Glove’s Faustian bargain with the Lake Show has now been signed, sealed, and delivered…