Note that blockchain.info has gone a long way toward restoring trust in them.  They couldn't know ahead of time that this minority stakeholder would violate their trust when they gave them access to assist in daily operations.  They claim since to have removed this person's access to the admin panel, which is what I would expect a responsible business to do.  If they will confirm that all access to the database has been permanently removed, I will consider them to be a trustworthy business who happened to unknowingly hire an untrustworthy employee and dealt with the situation appropriately.

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.