I think the rocker is trying to tell you something, what that is, who knows.
I ticked off a rocker years ago. He did exactly the same thing, went as far as to completely fill each box with mud. Turns out the floor guys came after rough, and hooked up a few circuits for themselves, after I left the job. Along comes the mud-man caught a few wires with his knife, and felt he'd pay ME back. I called him and asked what was up. He said, "Thats what you get for leaving your wires live hanging out of a box!" Took a few other phone calls before I found that the floor guys admitted to doing it (Messing with my work!) so they could get 240 for a sander.