My understanding is the delivery manager was gone before the lot was lost. Tesla then flew in delivery managers from other areas for a week at a time to help out. None of those managers were going to be around long enough to secure a new lot.
And I'm sure you're aware of the crazy growth in Raleigh right now... finding land isn't always easy. There are developers snatching it up left and right. You've got a number of other car dealers in the area as well too, and I'm sure they are just lining up to play nice with Tesla - and aren't buying up/renting lots out from underneath Tesla at all!
It's a giant PITA - but not a problem that's going to be solved in a week. IMO - Tesla's #1 issue was locating the showroom/SC where they did in the first place. It's not an area suiting to running a car dealership - even if it is one that doesn't store un-purchased inventory on site.