Normally, when you have a settlement for a lawsuit especially, one that basically is threatening going to drop the garbage on Brock, there is a Confidentially Clause drawn up for signature of both parties. If that is the case and Grey informs anyone about the contents of the lawsuit and/or settlement, he could be legally bound to forfeit the entire settlement amount. Therefore, I do not see him spilling the beans on Brock or anything about the case. If Brock's attorney did not have a Confidentiality Clause in the settlement he should be sued for malpractice.