Unable to remove Facebook contacts from phone

[SYL]

Hey Everyone, I made the mistake of syncing my DX with Facebook when i first got it, and now i can't get rid of the contacts that facebook spit into my phone. I went to the accounts page in settings and removed my facebook account. All the contacts without phone numbers are gone, but some of the ones that do have numbers, show that they are linked to "null" and when i try to delete them, it says "To remove this contact from your phone, remove this person from your friend lists on the following providers."

I really don't want to do a factory reset? any ideas?