Dunk in warmups then warning?

[BillyMac]

Head coach A is seatbelted because somebody on his bench mouthed off (one of the listed reasons for a written warning) above the level of a written warning, and was charged (with no written warning) with a technical foul. The written warning rule is now longer in effect. The next occurrence of bench personnel, including the head coach, creating an unsporting act goes directly to a technical foul. No written warnings anymore. Hopefully, we can all agree on that.

Head coach B is seatbelted because somebody on his team dunked pregame (not one of the listed reasons for a written warning). The game starts and head coach B is standing and coaching in front of his seat (one of the listed reasons for a written warning). Does he get a written warning, or does he immediately get a technical foul?