Can verified Twitter users censor your tweets?

i replied to this guy's tweet this morning. it was in relation to the new data retention laws in the UK

i could see my reply among the others but now its gone: (click on the time links of his tweet above to view the full page)

there was tweet from another user that i noticed isnt there any more and managed to track it down. im not sure if any others have disappeared.

also, the tweet doesnt show up when i view the "tor" hashtag page but im fairly sure it did a while ago

any ideas on what is going on here? maybe its ok to call the guy "dishface" "panface" and a "spewtastic cock crumpet" but you cant mention "tor" or "encryption" ?