Your backup solution has to be the same type of encryption to work. Going from 802.1x to psk does not work in any environment. If you want a backup in case your radius goes down or your AD, then create a new SSID the uses psk and disable it until you have to use it. This is not really ideal because it's a manual change, but not much you can do. I wouldn't really call it a backup more like a temporary solution until the radius comes back online.
-Scott
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-Scott
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