These cases can include
- political incorrect words
- My Spammers
- Idiotic tweeter
Visit the profile of the member from whose list you want to disappear.
Click on the TOOL button beside the LIST Button
Click on BLOCK (Twitter user name)
After you blocked the member, you won't be anymore on the list of this member!
If you want to follow the member again simply "unblock" the member by clicking on the link in the profile, you still are no more on the list (until the member would put you up again).