Yup. They do this often, sometimes citing non-existing policy, sometimes not. I doubt the author will get access back, but you never know. As far as I can tell,

Yup. They do this often, sometimes citing non-existing policy, sometimes not. I doubt the author will get access back, but you never know. As far as I can tell, he has zero recourse against Amazon. The lesson should be not to use Amazon's services for anything critical like running a business or sites with users without being aware of this risk. The risk is not Amazon-specific at all, although it is higher with Amazon than with most providers as they have been closing accounts at will for well over a decade and don't seem to be on any path to slow down or stop.