This is the real story. This is 100% a problem with Radix. Safe browsing targets the website not the domain. No reason a registrar should be suspending an entire account over something a company reports. Black-holing the A and CNAMEs on a subdomain? Maybe..... But even then I don't think it's the registrars place to do that. Freezing the entire account? Absolutely not.

Blackholing the a and cnames would prevent getting off the safe browsing list, as mentioned in the blog post.