Someone before called it an offset patch, I'm not sure how many addresses and pointers are really used by RB, but if it does indeed read memory and pointers, it's just a matter of finding the new pointers, which is pretty easy for someone who is as skilled as mastahg. Seems like most updates break the bot with offsets, but it shouldn't take too long to fix I would imagine, either.
No it doesn't usually take long. The thing is that Mashtag is basically the only developer, and I'm pretty sure he doesn't live in the US. So even while we're awake and the patch is live, he might not be yet. Once he gets up and gets going he'll have it up and running. Generally it's down less then 12 hours.