Ray,
For many years our BCAPL / ACS / VNEA team had at least one player who matches your description. Whether you view it as good or bad, we've reached the finals of all three in both Open and Master 8 and 9 ball. Seems the distractions caused by one or two players did not change the focus of the other players. It does beg the question of how much distraction is too much.
A player who complains to the rest of the team about where the cue ball ended up in relation to where it had to be, how lucky his opponent was to beat him, his opponent cheated, his opponent "sharked" him ad nauseum should only be a minor distraction. JMHO.
Lyn