[FBALL]

OK, the valid fair catch signal is putting your hand above your head and waving it back more than once to gain protection. This player is permitted to raise his hand to block the sun or lights but was he waves it back and forth, that is the valid fair catch signal. This play, legal and the officials did not mess anything up.

Actually I have seen teams penalized for an illegal fair catch signal for doing the exact same thing. Only difference was the returner waved his arm one way and actually stopped instead of taking off. The result was a first down for the kicking team.