As suspected.... I got home yesterday and the remaining fry were dead.
Not as I hoped.... There was no clutch waiting for me.
As I feared.... Something went wrong while I was gone and two of my tanks were disconnected from the main system. My brother called me twice for this and I walked him through how to rectify the problem twice. Apparently the second time (24 hours pre arrival) he forgot a step and the flow was stopped again. Nothing died, but some anemones are not real happy in one of the two affected tanks... though, that may be attributable to the CBB. I'll have to see how they look tonight.
I'm hoping that the melanopus will lay again once the parameters and feeding schedule return to normal.