Calling him out as a pussy, no so much but I def think Coach is letting him know that he is losing the starting position each and every day that this injury prolongs.
He's not outright saying it, but it amounts to as much.
A buddy, by email, said he thinks Chiz is simply easing the Moseley fans in to the reality that he won't be the starter.
But it still reads to me like: "we got 10 more spring practices, and then you got til August to let it heal, if you want to compete for the job, now's the time".