((((Wepow)))) That is a very hard assignment. And right before you are going back to work. I am not surprised it brought up feelings of turning the anger and hatred inward on yourself.
I dont know what you have done in the past with SI, but it seems like you stayed more or less present (maybe?) and stopped yourself from doing any real harm. For me that would be BIG progress. Maybe T will see that for what it is. Painful feelings that were certainly going to come up with this hiomework and you handled it more or less pretty well. You tapped and bit a little, not to hurt the WePow you have come to care about more.
The way I see it is that slipping in some way is part of recovering. We learn to catch what it is that triggers us to do it sooner and sooner. And then before we do it. I had SI thoughts yesterday and I was disappointed in myself for even thinking that way. But I am going through a lot and it has to be okay. It wont always be this way. I hope. For both of us