I've done it and don't find it creepy at all! I can totally understand how when we have traumas, inside we still are a bit like a hurt child. Many of us didn't get comforted when we were distressed, so we don't know how to comfort ourselves now. (Meaning that we don't know how to bring about that physiological feeling of being soothed in our body.)

By imagining that our t is helping to comfort us, it gives us the opportunity to know what it feels like to have somebody bring relief to that hurting part of us. If we can let it in, we find out how it feels to be comforted. The intention is for us to learn eventually how to comfort ourselves when we are distressed by bringing up a mental picture of being comforted and the physiological feelings of relief that gives.

It's actually a process of helping us learn how to modulate our emotions and soothe ourselves. As a child, our parents are supposed to step in and soothe us when we're hurting. After experiencing this over and over again, the child learns to embed a mental image of the parent comforting them. Over time, when the child is upset or sad, they can draw on that mental image of mom comforting them and it soothes them. They therefore learn how to soothe themselves when they are upset withou mom having to be there to do if for them. They have learned how to integrate a mental image of being soothed, and this brings the physiological feeling of comfort.

Now as far as visualizing a traumatic event and imagining a different outcome, that didn't work for me. But imagining a traumatic incident and picturing t and I soothing that hurt part, yes, it has begun to help me actually feel inside my body what it feels like to be comforted when i am hurting. I did not know that feeling before.