Washington State had the same situation happen - in a State tournament Championship game!! It was about 10 years ago, and the AC picks up a T in the second quarter. HC picks up a T in the third (his team was down by 20+ at the time), and then at the end of the third, the AC picks up his second and the third in the combo on the HC!! Both are ejected. Game is delayed while the school's Girls HC comes down out of the stands at the Tacoma Dome, and he finishes coaching the game!!
Oh, and the "star" player for the team picked up two T's and was tossed, and so was his Mom who was allowed to sit at the end of the table as the team's scorekeeper.