That's not going to be effective ever, especially if the case is slightly more complex, events timeline is unclear, or multiple DT1's have added person to DT2, or if the bad DT member is DT1. In any case, such would require a huge effort and waste loads of everyone's time. It's very unreasonable expectation that such DT member would be removed.

For example, you can see that Vod is on DT2, added by three DT1s. They're quite inactive and unresponsive, so practically Vod can't be dropped out of DT2 no matter what he did. He threatened to red-rate me unless I removed my rating towards him. I did not remove my rating, so he proceeded in red-rating me. Is that abuse or not? Somehow vocal people here in bitcointalk seem to acknowledge that as fair and not abuse, which is insane and tells about the cliques and DT system badness more than about anything else. Well we all know what happens if you don't bend to DT'ers will.