For what it's worth...

When I first noticed the problem (maybe an hour or more after it likely occured) the first step I took is that I logged into each of my rigs and disabled the useast server (which each was pointing to). This had the effect of each rig going to the uswest backup server.

This immediately caused shares to once again be registered on wafflepool.

I didn't leave it at that, though. Worried, half an hour later, I power cycled routers and rigs, restarted miners, and monitored them, once again on useast, to see if shares were being registered.

They were.

Then I went to sleep, thinking I'd solve it in the morning.