I'd be curious how they will figure out who it is. Also, the announcement mentions what the fines can be. Up to ~$19k for a single violation.
The FCC is remarkably hands off amateur radio. They let ARRL and other clubs essentially run the show, including licenses and monitoring compliance. It's like if your buddy the ATP in the flying club had the authority to give you your Commercial ticket, but someone else in the club was watching to make sure you stayed current.
With all that said, if the FCC finds out you stepped outside the lines (and they WILL find you), they'll ask you nice to stop if maybe they think you don't know better. That doesn't apply in this case, and they'll bring the rain.