Oh, the lender has no control over the borrowers account. All of that is handled by the hive.loans service. Powerdowns go to the hive.loans account and are then distributed by percentage of capital of the loan supplied back to the lenders.
It would be cool to see this on a chain level, but it's unlikely this will happen.
Likely couldn't get DHF funcing for this as it's closed source to prevent anyone on steem from taking the code and running a similar service.