As per what piuk said before, I'd think all access is severed:
Roger and the support agent's access to this information has been revoked.
When I read the following:
What happened. . . Roger used his access to the blockchain.info admin panel to lookup . . .
Why does Roger have access to the blockchain admin panelHe . . . helps with support . . .
Who else has access to this information?Me, Roger and a customer support agent.
What has been changed
- Roger and the support agent's access to this information has been revoked.
It is unclear if "access to this information" means specifically "access to the admin panel" or "access to all personal information". It could still be possible for Roger to access personal information without access to the admin panel depending on blockchain.info's network and database security.
EDIT: blockchain.info has acted in a responsible way and removed from MemoryDealers all future access to personal information. They could not know in advance that MemoryDealers would abuse the access allowed them as an employee. As such this post has been edited to make it clear that blockchain.info is not responsible for the actions of this particular ex-employee.