And how would that bolt know exactly when to drop?
Seems obvious to me that they simply missed this during pre inspection. Doesn't change the fact that this could easily have been on purpose. If there is a technical infraction then they should not make judgments of if they cheated or not, just give out the same penalties to everyone.
Of course, they could have left the bolt loose intentionally, but I don't think it's a good idea to drop a shock at 190. You can't prove intent on equipment failure, but that does not stop some from trying.