The MIAA (Massachusetts HS Asso.) has a shot clock document for Timers, which is taken from the NCAA Rules.
Massachusetts uses a 30 second shot clock for HS (along with a few other modifications from NFHS).
IN play #2 I initially thought the clock should not be reset because the offense would be getting back (keeping) the ball for the throw-in. The document states the clock is not reset when: during team control the defense causes a held ball and the AP arrow favors the offensive team. The only thing I could figure is that Team A had lost control once A1 shot for goal (a try), so it doesn't fit the criteria for no reset.
Another section states that the clock should be stopped and then reset when team control is again established after the team loses possession of the ball when a held ball occurs. Hopefully a college official can explain if we reset or not.
Here's the link:
http://www.miaa.net/bskshotclock.pdf