From the way you have worded it, I am thinking there is a benefit to Team B. The issue would be intentionally having a helmet come off or a player faking an injury, which would require the clock to stop, and/or be set to 25 seconds, which would force Team A to run another play. The official in place can make a judgment call on this, correct? as far as a fix; assuming what I stated prior is correct lol; maybe just pause the game and play clock, and start again once the gear is fixed or the player is off the field?