Tom Arnold Says Roseanne & ABC Need to Apologize for Crazy Conspiracy Theories

[[tmz:video id="0_z654lp7m"]] Tom Arnold can't fathom how Roseanne still has a job ... but he says the least ABC can do is apologize for her insanity. We got Tom at LAX on Sunday and asked him about his ex-wife, Roseanne, whose show reboot…