Here is the scenario:

Colleague shared a list; accepted, all was good. I accidentally deleted the list that was shared with my. My colleague account still indicated the list was shared with me -- he was unable to "reshare" it. He tried to delete / readd me as a contact but that didnt work.

Thinking it may be best to start over I deleted all of the lists that had been shared with me but now it seems I cant get back any of these list.

Any ideas what may be wrong or how to get back these lists?

Thanks,
Eric