The victim in the February 21st moshing incident who had a concussion and inspired a police crackdown on "moshing" and violent dancing spoke to Punk Rock Pravda about the law:

It's over a month later, and I'm still not recovered, it took a whole month before I could make it back to school. There were a couple weeks where I just couldn't really walk properly. One of the doctors I saw thinks that something was just fucked with the brain circuitry that controlled my legs. I still have to deal with near constant headaches and even this interview is making me a bit disoriented, like my head just ain't all there. But shit happens and hopefully everything will get better.

They're not going to stop people from slam dancing, moshing, or whatever the hell they're scared of. We want to be there. We choose to spend our money on a ticket and then walk right into that pit of people slamming their bodies into each other. So if we can't do it in Boston then we're just gonna do it somewhere else. No one is being saved by this, Boston is just asking people to stop pumping money into their clubs. [Small clubs not enforcing it] is exactly how I think it should be handled. Let the venues decide how much they're willing to tolerate. I feel like most venues that are willing to host aggressive shows understand what they're getting.

Check out the interview here or the original Boston Herald report on their website.