Why didn't he go for a take down or pulled guard 
Wrestling and takedowns are very effective in MMA but don't work against multiple opponents. You take the guy down, you are on the ground, in the perfect position for the other attackers to stomp your head in. The same for jiu-jitsu.
When fighting multiple opponents, you must remain standing, which means striking. You either gauge their eyes or hit them in the balls, and if that is not possible, you box with them and hope for the best. Using kicks is not recommended unless you are as nimble and skilled as Anderson Silva. If you slip and fall, you are fucked.
SUCKMYMUSCLE