No, our vet was as stumped as we were. The only explanations we have are nerve damage from (???) or a possible false negative on the Marek's, though it is unlikely.
Also I must confess that every rooster I've had, has had at least 5 different nicknames!! I am terrible at just babbling words at them. Trousers was Trousers, Wibbles, Tibbles, Tibbs, Mr. Tib...
The Baron is: Baron Rufflerump, The Baron, Roosta', Ruffles, Snuffles, Puddles, Bubbles, Bubble, etc.....
No one said I made any sense!!!
I completely understand. My little white cochin hen thats currently brooding eggs is named Hope. Somehow I mutated her name to Hopey, then Hopey dopey, and finally now Dopadoo...its a sure sign that i love something when i give it all kinds of pet names.