Because the liars are part of the entire picture.
It was clear the person was fabricating. What do you not understand about that?
The first three witnesses continually changed their account of that.
From being up surrendering, to up a little, to finally just one going up a little. Not in surrender.
Anybody else that may have indicated they were up in surrender was fabricating.
I think it was witness that didn't show up to testify to the GJ that indicated it looked like he put his hands out to check his injuries.