the guy did the right thing,period.
imagine a group of say 10 thugs,all armed with guns,knives,matchetes their tools of trades. there is little you can do in such a midst.
secondly,a thug hates betrayal. he is ever tense because for every move he makes,the line between life and death is almost nil. by exiting from the scene,the guy could have frantically sought cops. therefore,the least the thugs could have done is to free from the scene immediately,without creating any disturbances (gun shots,screams et al).
mwana wa kahii. . . .