I never went to a commuter campus but it sounds to me like you all definitely need some team builder activities to take place and a real live in your face, gripe session. Give EVERYONE a chance to confront those with whom they have problems with but at the end allow some sort of wrap up that will allow for the past tensions to unify the organization. The only way you all will ever be able to work together effectively is to eliminate as much of the tension as possible. Otherwise your organization will be very divided and the problems that exist now will increase in magnitude. Think of it like a festering sore that is never treated. It stinks and oozes puss.
Secondly, I would suggest that you poll or survey the members about their reason for joining APO as well as how do they plan to have a more effective/positive presence on campus in the future.
It is important to remember that not all of the members in your organization will get along -- that is a very rare occurrence. However, what is critical is that the organization displays respect for the members as well as the organization and principles.
Best wishes this year.