That's almost certainly a case where POST parameters get logshipped to some server for debugging purposes, and it's easy to miss something like that in an audit

That's almost certainly a case where POST parameters get logshipped to some server for debugging purposes, and it's easy to miss something like that in an audit when you're dealing with terabytes of logfiles. Even if the logfiles are rotated every day you don't know if a developer has seen somebody's password during that window, so all passwords are assumed to be compromised.