I'm not totally convinced that's Ron. For one, the firefighter is never given a name, as seen here.
View attachment 3885148
View attachment 3885149
Two, we know DPC reuses assets all the time. It could just be the same model as Ron, slightly tweaked.
Three, he's used primarily as comedy relief. If it was Ron and he was involved in the camera conspiracy in any way, I feel like there'd be innocuous shots of him in/near Derek's room. Not that there's any good reason for that,
EatYourVegetables is right that the camera was installed prior to Halloween. At the very least, right before the DIK initiation party, because there's pictures of Arieth having sex with Jacob/Derek.
But maybe it is Ron, because it'd be fucking funny for him to have another piss-related incident happen to him again