I don't know why this wasn't known to begin with. Nicks is in a contract year. He's going to do everything he can on the field to earn the max contract while doing everything he can within the rules to avoid injury.
I think it was "known" but just not articulated by Nicks publicly until now.
“Never argue with an idiot. They will only bring you down to their level and beat you with experience.” MB Rule # 1