Logically.
Dembe went in cold, did not have time to target, did not see Solomon, used his skills by taking out the
threat as he saw it, those closest to him and those of threat to Red and whats-her-name
There is no way he could have targeted and killed Solomon as soon as he entered, I would also take
into consideration that a flee'ing person is non threatening, so even if seen flee'ing, Dembe would not
have recognised Solomon out of the corner of his eyesight.
___________________
So, it is realistically viable that Dembe wanted two(2) things to happen, Save Red and kill Solomon,
but, this did not happen... the only thing that I disliked about it was, how fast Solomon escaped?
Where in that time?