I had similar situation a while back with a seller I had placed a few bids with. In fact I had won a few items but asked him to hold on to them until the other auctions had finished as he lived relatively close by and I was planning to pick up the lots I won (heavy albums etc, save on postage

).
Then suddenly he "disappeared" from
ebay. I emailed him and asked what was happening. He said he'd been suspended by
ebay due to some grievance from another customer. He had great feedback, and I was more than happy with him, but I didn't ask for any details. But I was actually really angry with
ebay because they hadn't sent any explanation to me, when I had lots won and paid for, waiting to be collected. The seller had not been able to contact me as his account had been suspended. It was just lucky that I already had an email address for him, having been in touch about previous lots. I ended up collecting my lots and while I was there, picking up some more stuff and just handing over some cash.