Greg,
That sux! If it was my tank I would keep doing water changes until the nitrates reach zero. The corals are already shocked and stressed anyhow. I would keep a close eye on the salinity, that would be my main concern.
Is your new skimmer working well? sometimes a new skimmer takes time to really break in..I would do a 10%-20% water change 3X a week for the next few weeks until the skimmer is running at full efficiency.
BTW - lost my bubble gum due to overheating last week
What skimmer did you end up getting?