((((SAWE))))) What you describe makes so much sense! In fact, I have things like that happen in session a lot. One time I actually experienced T standing up and rushing over to my right side (where there is the end of the couch and then his end table in the corner against the wall - aka, no place to stand if he did want to go there). Then I experienced him yelling into my ear on that side as loud as he could.
He has never even raised his voice at me that I can recall!

I asked T about all that and he said that he experiences the same thing at times when he is overloaded. He said it was very normal for the mind to magnify things or percieve things out of context when it was stressed or triggered. It is the brain trying very hard to figure out what is going on so it can stay safe.