Sent em' a rather caustic e-mail a few days back...no reply yet though, and to be honest, i don't expect one.
Not sure i agree with the 'your video was awsome' sarky' type e-mails as i think it will probably go over their heads (as did the damage that they caused to Silbury by being/doing what they did, assholes).
Lets hope that EH get their fingers out and prosectute em' (or their UK consorts) and use the proceeds of the video (if any) to help make good the damage to a singularly special monument.