This is a public forum made up of gamers just like you. The "stupid rule" is SONY's, and there is a very good reason for it to be there.
You should NEVER have shared your account information with anyone else. Period. Change your password to a complex one, never share it again, and change it every few months.
You could also try contacting SONY Customer Service and making a request for an exceptional deactivate of all consoles. If you speak politely to them you may increase your odds of success.