Let’s see, he’s pointing a blade at your innards, you are pointing a pistol at this..... Bang Bang Bang....
I never could dance well.
Where do these “professionals” come up with silly and dangerous stuff?
Hand to hand means just that.
Armed means armed, just that.
If I am locked arm to arm within the context of the video, I have failed in so many ways already, now is the time to step up, pivot away from his blade while twisting my pistol towards his torso, if he has his hand on the slide of my pistol, he gets the first shot as the muzzle cones to bear on his torso, then I yank my firing hand/arm viciously back, and continue to back away, attempting to continue firing...
Distance is your friend.
No dance lessons required.
Bingo! For example, it appears if this guy fires his weapon either intentionally or accidentally, he stands a good chance of blowing a hole in his left arm or hand. That might distract him long enough for assailant2 to finish it.