Sure, one could get a gauge to "close" at the intended weight.
Czaban on DC radio did a test during his show Thursday or Friday and it only took a fraction of a second to lower the PSI from 13 to 11.5.
If this were a normal rest room... Swap out the balls hidden in the drop ceiling or a cabinet (under the floor) is a much more reasonable task than deflating 12 balls,
NEW RULES
The game balls shall not leave the possession of the Referees hence forth.
and to be honest LET all the balls be brand new. Neither team should have the ability to touch the balls before a game. No scuffing, no soaking etc etc