Exactly. Says nothing about a players character to want to choose your situation after a coaching change versus waiting to see who is brought on and if they're even interested in having you around.
Why would players do it immediately if Crean were to be fired tomorrow? Because they'd be eligible beginning of next season. Why wait until April, play under an interim coach until then, wait for new hire, get told you're not needed then have to sit for all of next season when you can get the process started now.