WLC Failure scenario: Flexconnect in Standalone Mode

Flexconnect in Standalone Mode I recently came with a situation where a site with two old 2504 AireOS WLCs in N+1 redundancy with APs in Local mode lost one of the controllers. They were using both SSIDs with WPA2 Personal, and WPA2 Enterpise. The site was concerned about having a disruption if the remaining controller went down too. During the conversation with the site I pointed out that on the Flexconnect mode, when using local authentication, the WPA2 Personal SSID would work, and although I personally never really tested it, I knew you can add the Radius servers to that configuration. The site after finding an old 2504 WLC with licenses, finally opted for getting that old WLC and keep the existing configuration. That is probably the best option, since it doesn´t need any change, and moving to Flexconnect required testing and validation. In any case, I wanted to test this solution for the WPA2 Enterprise (the WPA2 Personal I´ve tested in the past and I know it work...