It probably stalled because of the push from the west with the dying frontal boundary and the push overtop out of New Mexico . Systems are a little blocked.
The High over the Atlantic is enormous. There are some ULL's underneath. But that's par for the course and the evolution of the summer. As I was speculating last weekend, that's really a setup that can bring long tracked storms in. Considering the Bermuda High hasn't even tested how far west it can get, down the road is a big question mark.