HOUSTON — Screens won’t save Deion Sanders’ dreams. Georgia Tech left a bruise. Houston left four or five. But come on, folks. Do you really trust CU Buffs freshman quarterback Julian Lewis in the hands of Pat Shurmur? Would you really let Pencil Pat take your Lamborghini out for a test drive while he leaves the parking brake on? One win in three games calls for drastic measures. Not desperate ones. If Coach Prime is going to change quarterbacks…