Indeed, it is a scary thought to imagine Gov. Perry in a debate with 0 (alas; he can't even beat Romney at it and therefore won't even get the nomination). A sinking feeling set in. If I support Perry, Romney wins. If Romney wins, 0 is re-elected. Horror and desperation ensues. Ergo, Newt Now.
Besides, Rick Perry is NOT the only one running who can right this sinking ship. Not even close.
Why not Cain? He has the communications skills you covet.