YHO - Technical Foul?

[JugglingReferee]

Play: City Semi-Final, 4th quarter, 0:46s left. Team A losing by 4; ball in frontcourt. T is table side, L opposite side. Ball goes OB on endline, about 5 feet inside the 3-point line on the table side. T is 28 feet away (slightly above the 28' hash mark). One player from each team goes for the ball; no player closer than the other (from what I can tell). L calls for help and T gives the thumbs up to use the arrow.

Arrow points to Team B.

A bit of confusion since the L after asking for help, signalled in Team A's direction. (He didn't do it because he changed his mind on the call.) T explains to Team A coach that the L pointed in error, and explains how the help mechanic works.

T is about to slide over to opposite side as the new L for Team B's backcourt endline throw-in. Team A #20 walks right by the T (new L), says out loud, about 8 feet from his own coach, and says while looking right at the T (new L), "What are you, stupid?" While saying this, he gives a gesture of a few fingers pointed to the temple on his head, and swirls his fingers.

Thoughts?