Again with the dummy wallet thing.
ANY time I find myself in a situation where I am flanked, I correct that situation. Threat or not, If I have someone blocking my path in front of me and someone is behind me, I am turning sideways and backing up so my back is protected (READ - no one behind me) and I have view of all parties involved. Point a gun at me and threaten all you want, I am still getting everyone in sight.
MEANWHILE, I am playing the part of the scared little sheep. "I don't want any trouble, please don't hurt me, I'm getting my wallet" Moving slowly so as to not alarm them, I am both un-tucking my shirt with my left hand while my right is taking it's time getting to the wallet, now I can hit the go button and point shoot 3 into BG with the gun, turn and see how BG 2 & 3 want to play. This whole paragraph started when I saw #1 and presented my strong side (right) to BG with gun and am backing up getting #'s 2 & 3 in sight on my left.
When my weapon started clearing holster, I started moving towards BG direction insofar as a sideways movement along the car that is at my back, increasing the knife guys distance.
ALWAYS have one in the tube
If I am caught in this situation without a gun, the grim reaper is a lookin' for someone that day, it may be me but I will not go without every intention of bringing at least one of them with me. I am bum-rushing the gun guy knocking his arm away from me, hoping he pops off a round at his boys, doing all the nasty H2H fighting mentioned previously. If I can ring his bell good enough from the onset (say a roundhouse elbow to the head), I am grabbing him from behind in some fashion (hair, around the neck, shirt or coat collar, and using him as a human shield from knife boys, while I am poking him a couple of times with my knife. Earliest opportunity, I am cutting bait and running.
Bad position to be in, and I will count myself lucky and all my karma for this life spent.