You'd be surprised what a union strike can do.
I think they were calling Hostess' bluff, and they were actually on the verge of bankruptcy.
I never liked any of the Hostess stuff, including Wonderbread. *shrug* But I do feel bad for the 18500 workers that really had no choice over what their union was doing, and are now jobless over it. I can totally relate to losing your job over something completely out of your control.