links from bad neighborhood

i have a website with some links ( app 20 from a total of 150 ) from bad neighborhood.

I think they are bad because they are poor spun content and the article directories are now deindexed bei google.

My problem is that i can not log in and delete the links and the webmasters are not responding.

I do not want to move to a new domain name. The Domain is 3 Years old and has a PR of 3.

Any suggestons ?