It's not only the commission that is in the wrong here.
The UFC knew about this yet they've only told about it to Nick 1 hour before the weight in, which is pretty pointless cause he surely was on point at the time, thus giving GSP an extra, maybe insignificant advantage, yet an advantage.
Lyoto Machida, former UFC LHW hamp
Future UFC MW Champ
Benavidez, Barao, Aldo, Nate, Nick, Lyoto, TBD, JDS
Forever hanging in Anderson Silva nuts