i ssh'd in, and it was running fine, so I must have missed it (or you may have reset it).
Just to test, I manually cycled through a few of your manual profiles and was unable to reproduce
Could have just been a fluke?  I'll do some failover tests my manually blocking out a pool with iptables on my machine just to make sure there isn't some new problem, but for now its hard to say what caused the problem you witnessed.