URL with backlinks 302 redirects to login page - best practices?

[Andiamo]

I'm working with a client who has a number of backlinks pointing to content that was at one point free but is now only available to subscribers. The backlink URLs 302 redirect to the login page so that the users can view the content after signing in.

Should I request that those backlinks be removed entirely? Correct me if I'm wrong, but it seems like a really bad idea to change the 302 to a 301, since that's not the target URL.

Thanks in advance!

[aakk9999]

Two questions:

1) The pages the links are pointing to - are they currently ranking in SERPs?
2) Is your client getting any traffic from these backlinks?