Hope the defense has one of those MA specialists teed up as a witness.
Yes, it would bee helpful, especially for a jury of women, to have someone explain that Martin was in what is called a "full mount," where he has passed the bottom person's legs. This is the most dominant position to be in for ground fighting (having one or both of the bottom person's arms pinned under his own torso or the upper person's knees, a "crucifix" position, is obviously, even more dominant).
This is the position every ground fighter tries to achieve.
Normally, after a takedown, the top person ends up in the "guard" of the bottom person; that is, between his legs. From there, the bottom person can still exert some control on the top person's torso with his legs.
From there, the top person will try to "pass his guard," by getting past the bottom person's legs into what is called "side control," and then throw his leg over the bottom person, straddling his torso, to achieve a "full mount."
Now, even in full mount, the bottom person can clinch the torso of the upper person, making it difficult for him to get the full range of motion required to throw forceful blows. So, when getting full mount, the top person then tries to "posture up," being upright on his knees so he can then throw forceful punches and elbows.
It is probably the most vulnerable position to be in in a fight.