As soon as the energy and activism of the Wisconsin protests was diverted into harmless electoral channels, this movement stopped being about anything but the Democrats' political interests. When the workers of Wisconsin were leading the protests, there was a genuine Egypt-like quality to it, of the people getting pissed off enough to take their destiny into their own hands. The logical next step should have been a general strike.
Unfortunately, no matter how many times the Democrats piss on the interests of the rank-and-file union members (and the working class in general), the corrupt union leadership is only too willing to make recalling Republicans and electing Democrats the entire focus of the movement - as if that would make any difference whatsoever to the push for austerity and the attack on collective bargaining rights.
I've said that the American political system won't really change until progressives, the left and the working class unshackle themselves from the anchor of a corrupt, corporatized Democratic Party. But one of the biggest problems is that the leaders of the union are still perfectly cozy with the current arrangement. Ultimately, it doesn't really matter to the union bureaucrats if the Dems break all their promises and spit on unions by neglecting things like the Employee Free Choice Act; all that matters is that THEY get to retain their privileges and hefty salaries. It's the predictable outcome of bureaucracy in all its forms - bureaucrats that raise themselves above the rank-and-file forget who they represent and become consumed only with preserving their own interests and perks.
The working class needs to fight against the Democratic Party as much as against the Republican Party, but there's one massive obstacle that unions (the most organized workers) need to get past - the corrupt leadership that continues to tie them to the Democrats.