I think the Wall Street Journal article is telling on two levels. On one level, the first guy under the bus is acting director Melson. That is fairly high up the tree; but we already know from testimony that Fast & Furious was authorized at a higher level than that.
Also, when the President's press secretary was asked to comment he said "President Obama did not know about and did not authorize the opeartion."
Not only did the White House skip an opportunity to pontificate that they used in the past; but they also stopped speaking up for AG Holder.
I think there is still some significant leverage here.