See "Tuck Rule" Patriots-Raiders circa 2002
Bad rules exist (and I think the tuck rule is idiotic), but they should call the rules as written and consistently interpretted. This particular rule, which I think is bad, was applied in the SB as written and interpretted the same way it was twice against the Steelers in the regular season.
As much as I hate the "tuck rule" (and really, who likes it?), I'm still left with the dilemma: how do you re-write the rule without putting the official in the position of having to "read the passer's mind", so to speak? In other words, what objective critera can be used to indicate when a forward pass attempt ends, and a "tuck" begins?