Well, I got glendaclaborne.com back and have learned a lot about domain names in the process. I'm lucky that during the time it was registered by somebody else, it was used only for marketing/ linking purposes. It could have been worse. Like the case of a David Pecker whose name was used for a porn site and whose complaint to the WIPO was denied (see Protection of Personal Names in Domain Names and the WIPO decision).

I didn't have to go through WIPO. The people who purchased the domain name replied to my transfer request and we went through the transfer process smoothly. They explained that they purchase domain names in bulk - no personal interest or malice involved. It's all business and it's all legal - domain names are a commodity bought and sold.

I just have to be mindful of expiration dates and renewals from now on.