I agree. I am anti-SOPA, but this is not censorship so much as an overzealous attempt to stop spam, executed poorly. Did they do a wildcard block/hold/whatever on a top level domain of yours *.mydomain.com so all your sub domains got blocked? I'm guessing some goober at bluehost just went one step farther than he should have in just removing the one DNS entry, and they definitely should have contacted you. Sounds like poor customer service.