This sounds too much like the sale of WMSO AM 640 in Memphis to Bott in 1986. However most of the blame goes on the previous owners selling to a group they knew had no intent of keeping a CCM format.
If the sale of WNAZ still goes through, listeners who supported the station should demand refunds, or at least let Bott know that they will no longer support the station when it changes owners and formats.
I'm not totally against Bott. They do a very good job in the Christian Talk format that they do. But I do think that if they want to be on FM in Nashville that they should buy another station and leave WNAZ alone. However WNAZ's board deserves most of the blame for selling to them in the first place.
I'll admit it could have been worse though. It could have been BBN or worst of all, the owners of WNQM/WWCR that bought WNAZ.