He said he was in a hurry to delete everything from his servers, so if that's true, then him knowing who had coins in there is pretty much impossible.
Quick question though, what then happen to the users that had open session, the users that their funds were in their (bitlender's) custody. As they have close their operation and went away with the funds isn't that considered theft. Maybe you should drop him a message (might get an email alert) and come back online.
Here's another suggestion he should had escrow (to a trusted member) all fund belonging to their clients that had active session during time of service closure and funds will be returned to the rightful owners as they come claiming with valid proof. Guess it's too late for this now since he's no longer active.