From Wiki...
"Tripp Eisen (born Tod Rex Salvador June 29, 1965, in Pen Argyl, PA) [1] also known "Tripp Rex Eisen" or "Rex Eisen", is an American musician, best known as the former guitarist of the industrial metal band Static-X.[1] He is a former member of Dope, Murderdolls, Ace Frehley tribute band Fractured Mirror, Roughhouse (formerly Teeze), and local east coast bands such as The Right, Ego, and Lovesick[1]"
I don't see The Deftones listed there. He may have been a member, but I don't see it anywhere.
Not only that, but I wouldn't hold it against his former bands because he did something.