Sorry to hear about it. But tomorrow is the first day back to recovery. Count days that you don't SI if it helps you. It's always a struggle to get through when you use SI as a coping mechanism.
I'm sure a lot of people slip up. (I did last week.) It always depressing afterwards because that's when the guilt sets in. After a slip up---I think to myself "why did I just do that"? I think one of the worst parts is trying to hide it from people...though I've become quite good at that (which is good and bad I guess).
There is a lot of good information and suggestions on that list. I actually saved it and one of these days I'm going to get around to printing it.