There is a large number of US Air east pilots who would rather see US Air out of business than work under the contract ALPA is pushing for. They've literally been dragged through the dirt over the years and they don't have much to lose. The pilot group as a whole will give larger dues to fund the union and support their seniority numbers.
ALPA should wake up and treat these guys with some respect. Read this:
http://usairlinepilots.org/letters.htm