Maybe Marcus Foster is being a dickhead, and oscar is doing a poor job of handling Foster (and probably others) being dickheads.
If oscar were smart he would be very Snyderesque in his responses to questions of this nature.
By going public it pretty much sends a clear signal that their dickheadedness (if that is indeed the case) is bothering the coach.
Oh and since all things roll back to Frank here in Fapping Frankite Heaven, someone did an excellent job on GoPo of quoting Frank since he's been at USCe, regularly and repeatedly throwing his players under the bus to the media.