Injury Stoppage

[SMEngmann]

I was doing a girls varsity game tonight, packed house and a close game late (under 15 seconds left, team B up by 1). Team A is out of timeouts and my partner had a held ball call and A1 goes down hard and is slow to get up. My partner beckons the coach onto the floor and A1 slowly gets up as the coach starts to talk to A1 and other team A players start to gather around. When it became apparant to me that coach A was trying to coach rather than determine if A1 was OK, I informed him that he needed to leave the court and replace A1. My question is: can there be a technical assessed for faking an injury in order to gain the advantage essentially an excess timeout to set up a last second play? Also, how would you have handled this situation?