Sounds like the fact you're on FM (with a TX) finally went to your heads. Rather than a existing as a lower power second classic rock station in the market, probably were better off staying with oldies or at least retooling towards a Classic Hits playlist. Oldies to Classic Rock is a change up that your normal listeners may find hard to handle. WROD = Rock Of Daytona... Catchy, but you weren't established as a rocker (and instead were MOR/Top 40/Nostalgia/Beautiful Music/Oldies) so that image is likely going to be a challenge to convey. Oldies...Classic Cars...Turkey Rod Run... Daytona. That's what I remember when I think of WROD.
I will say though, Facebook is always the first thing that takes a hit whenever a station changes format. Not always the first sign of a bad decision, but certainly a record of it once it's later realized.
Byron