Good T/Or Time Out?

[PIAA REF]

The other night I was officiating a boys varsity game, late in the game with about a minute left I had a foul on the visiting team (at this point the it was a 6 point game) The foul was on a successful layup, it was a no doubter. As I went to the table to report the foul I look over and the visiting coach is barking instructions to his players from the court, and when I say court I mean he is standing 8-10 feet on the court. Earlier in the game he was a foot out of the box talking to his players and we mentioned it to him that he needed to stay in his box. When I saw him that far on the court my instincts took over and I gave him a T. After the fact the only other thing I thought maybe I could have done was given him a timeout, but should I? What would you guys have done.