Well this isn't a surprise. It's actually quite typical for the first union vote. When the union drive begins, the senior pilots earning over $150K/yr usually come out strong against union representation. Their seemingly "educated" comments tend to sway many newer, younger, less experienced pilots who in return vote "no" for union representation.
Management breathes a sigh of relief, the senior pilots go back to their homes with their swimming pools and Merdedes Benz's, and the junior pilots go back to their apartments and crash pads thinking they made a good decision; yet they have a lingering concern in the back of their minds.
The following year, the majority of the pilot group begin to realize that they are not the ones bringing home $150K+ and they are not enjoying the fruits of their labor as much as those who voted against the union. The management continues business as usual; pissing off pilots, abusing work rules, and offering nothing in the way of improvements.
The second attempt at unionization usually passes with an overwhelming majority vote. And it only wasted a couple years, thousands of work hours, and many of your hard earned dollars for the rest of the pilot group to pull their heads out of their butts.
I'm sure someday the exact same process will unfold at my airline.