There is a huge continuum of possibilities for how the Motorola sale should play out, but when the reality is an extremely profitable corporation pulling the rug from under 700 low wage contractors with minimal notice, despite explicitly claiming the contrary less than a year previous, just setting fire to the building and walking away somehow strikes me as a particularly immoral outcome.
Business is business and perhaps folks who were encouraged by that kind of dog-and-pony show are rubes anyhow, but it feels very "un-Googly" for them to have gone that route PR-wise if they weren't seriously committed to it and it's pretty clear they weren't.
There's nothing else to do or say, really. Rightly or wrongly Google has an image of being different than most politicians and corporations and so that's why people are disappointed. I get why they did what they did, I just don't think they needed the political, PR head fake.
And, that being the case, it's very relevant to ask "what would have happened had Google not tried to do this?". From what I can tell, the answer is "those people who are losing their jobs due to this plant closure would have lost those jobs earlier."
You're right that the contractors working at that facility may have gotten their walking papers earlier had Google had not come around post-Nokia (it was a most recently a Nokia plant - not a Motorola one, IIRC), so there is that to be said.
Again, my complaint is that it's just terrible optics for Schmidt et. al, to have signaled a commitment to growing U.S. manufacturing and then sold this enterprise not 2 full quarters from tepid launch of a toned-down flagship that didn't even get full support from the parent company's management.[2]
Additionally, Google did not really spend an "enormous" amount of money creating tech manufacturing jobs. They shrunk Motorola and phased out numerous lines and support for them and released thousands of Mobility workers before even launching the Moto X.
Yes, this might have happened anyway, but it's not like they were trying to grow the business organically. They were winding it down (and getting it ready for sale) while talking about growing it.
They were also able to take advantage of Motorola's losses to offset their own corporate tax liability and I'm sure they got manufacturing credits in Texas on that plant, which is why they had Gov. Rick Perry and all the cameras there and played up the whole "bringing back jobs" angle even though they were all temporary contractors.
[1] http://www.unwiredview.com/2011/08/11/motorolas-sanjay-jha-o...
[2] http://www.businessinsider.com/motorolas-super-powered-googl...
Also it's entirely unclear to me what the outcome might have been for Motorola as a whole, had Google not been having wet dreams about its patent portfolio. Perhaps you have some insight here that you're not sharing?