Just hours ago, Warner Bros. Television officially fired Charlie Sheen from Two and a Half Men, and TMZ has obtained the barnburner of a letter that WB sent to Sheen's lawyer Marty Singer to justify his termination. "At the outset, let us state the obvious: Your client has been engaged in dangerously self-destructive conduct and appears to be very ill," the 11-page letter begins before recounting Sheen's outlandish public behavior from the past two weeks (there's even a ten-page addendum filled with links to the negative online coverage the actor has received). Still, it isn't all rehashed information; here are four new details we learned from a close read of the lette