Waving the arms, "T" or not?

[Bart Tyson]

Last night I worked a HS game. On the way home my partner told me he assessed a T in another HS game. Play as follows; A1 does an awesome dunk, then he immediately runs down the sideline waving his arms up and down to the crowd in excitement. Beep T. (unsporting) I told him if he had done it to the opponents then you could call it taunting. To the crow, I didn't think so. What do you think?