I'm going to have to lean towards the latency side of this issue.

The night of the patch I had some issues with follow and two disconnects. Wednesday wasn't so bad, and running SM didn't seem a whole lot different other than a hang up or two. Last night almost seemed normal in most scenarios, there is still the initial "walk" animation/lag, but otherwise I have not had to modify my gameplay.

I suspect the core of the issue to be more in line with server lag, network congestion, patching, etc than any conspiracy theory plot by Blizzard to nerf multi-boxers.