double tech?

[Troward]

NFHS Subvarsity: A1 is going in for a lay up and B1 fouls him. In the officials judgement the foul is not intentional just a common foul. A1 however slaps back with an elbow which hits B1 on the back. Both player now are possibly going to fight but they are restrained by their team mates.

I called a double tech, and also administered the initial personal foul. and then went to AP.

However in post game I felt that A1 was really the aggresor in initiating the escalation, yet B1 was assessed a harsher penalty of 2 fouls towards his 5.
Would you have called just the personal foul and the tech on the player who retaliated? or the double tech?

thanks
GTW