All the AG/SigMonkey data jumped back half a day, but now we are finally on a kickass server and we can support the SigMonkey load 200 times over. 
A few accounts (Le_Dieu, fivaxis, Ryan, jeff, lilj, fuckingb) that were created during the move were left on the old server (the domain isn't pointed there anymore), but I have now transferred them over to the new server (a few of them had to be assigned new IDs, so they'll have to execute the SigMonkey setup script again if they wish to have a SigMonkey).
Thanks for reading.