Delete old records with API

Hi!
I'm working on code which delete old survey's data.
It seems I can't delete records for surveys where I'm not an owner, even if I am in an admin role.
I can check who is the owner of particular survey, I can get his/her token (or create new one, when necessary), but still can't use this token if the account is disabled.
I can't find any API option to transfer surveys between users, or change users privileges thru API.
Any ideas?