Hey, Keri Russell: You're off the hook! On Oct. 14's Gilmore Girls, Alexis Bledel debuted a new short cut. Given that former WBer Felicity hemorrhaged viewers after her 1999 chop job, is this wise? ''It's a subtle way of showing her pull away [at] college,'' says creator Amy Sherman-Palladino. ''Plus, we're whores for publicity. A hand can come off if it'll get us more press!''