I think the problem with Bargs
is his motivation (sounds strange when you speak of someone who earns as much money as him). He has the tools to be good offensively and average defensively (he can be quite good man to man and average in help --> last year streak).
So if he is able to find the motivation (perhaps having to earn his PT can do wonders) i think he can give much to this team, otherwise... he will be a black hole (on the floor and in the minds of his teammates) and should be traded ASAP.
I think his absence has benefited the team as a whole since its disheartening for his teammates to bust their backs off only to see him give a shit.