What is reality? Unions are strongest when they are in fact united in solidarity for a common cause. One member knows they cannot get every thing they want, but that they can get more by uniting with their fellow worker (who may want something entirely different) to get what they cannot get on their own. Any negotiator knows that if they present a unified clearly defined front of where they want to go, they are most likely to have success towards the goals than if they have a laundry list of what have yous or have nots or maybe this or that.
What the Teamsters have is an extremely political situation where one side will always deride the other regardless of the result of the negotiation. Posting on a message board, or printing a news paper is not true unionism. These mediums are fine for publishing facts and information, but true unionism takes place on the shop floor and at the union hall, where you can stand before your brothers and be heard. Your arguments are then framed in the context of where you are and your brothers right to also be heard. If you don't think that the company you work for uses this petty bickering against us during negotiations, well you're just being silly.