BOULDER — It was the Andy Warhol of cheap shots, a work of art so stunning and brazen that Henry Blackburn could’ve had it signed, framed in poison ivy, and propped up next to Travis Hunter’s hospital bed. “I mean, I don’t know, he hit him on the sideline,” CSU football coach Jay Norvell said of his safety’s barge into Hunter’s blindside early in a 43-35 double-overtime loss to the CU Buffs.