[eyezen]

I realize that the OP is NHFS, but the NCAA-M has a very specific procedure outlined for this...

[snip]
1. If you formally warn a coach for coaching, out of the coaches' box, please report that warning to the official scorer AND ask him/her to note the time of the warning. An in arena announcement is not necessary nor desirable.
2. Inform your partners that you have warned Coach A about violating the coaching box rule.

An additional reminder about this rule, Rule10, Sec. 6, Art. 2, f., 1, is that this warning is to be given to a coach who violates the "coaching his team outside the coaches' box" rule. This warning is NOT to be used for coaches who violate rule, Rule 10, Sec. 5, Art. 2, Class A Unsporting Technical Infractions, while out of the coaches' box.
[/snip]

So in other words, at that level is doesn't matter if you're "just coaching", outside the box is outside the box.

Next time its supposed to be a CLASS B technical foul.

Think about this, he is gaining an advantage by being closer to the scorers table that he should be when play is on the other end.

Having said that, fed rules do make it pretty harsh to go that route, (FT's AND the ball AND loss of coaching box entirely).

Best to take care of it early.