Apologies for the tumbleweed. As I remarked at MCiOS, so sooner had I wielded my magic wand and managed to get roughly back how we were, did the new server develop a hardware fault. Losing, you guessed it, any moves in the brief period we were back online. Since these probably number about three, I think we can pretend these never happened without any space-time paradoxes setting in.
Good that worked! Right, as to the future. When I return to the office tomorrow, I will install some stuff on the machines there that will not only back this thing up daily, but also allow me to restore from anywhere in the world, rather than rely on my laptop being (a) with me and (b) near a phone socket. This means that if there are any failures between now and, say, tomorrow morning, there's not much I can do. After that, this site always be able to stay alive as long as I do. If more problems occur, I shall consider moving to a more upscale hosting company that has downtime guarantees (or should that be uptime guarantees?). I'm hoping, however, that this is very much a one-off occurrence.
And I would say I had a nice weekend if it weren't for the fact I had all this shite to deal with, and I chundered for the first time in 6 years on Sunday. Nice. However, it was about 90% my fault.