In an ideal world, there wouldn't be a need for justice systems such as the courts and unions. Not that I'm placing them at the same level, but to an extent they serve similar purposes, as you yourself mentioned.
Union grievance and arbitration processes, allow an individual to stand up against a tyrannical goliath for what's fair and right. Without them; few would have the resources, procedures, or capability too.
Personally, I'm enthralled with the idea of all groups within an organization working in unison for a common goal, a partnership driven towards excellence. But we all know that ceases to exist in many work places. As the very anti-union sentiment expressed almost instinctively here, tends to carry across to many industries and work places amongst executive management and the non-unionized white collar employees. Quite often, to my sincerest dismay, it ceases to be about what's best for the stake holders... and degrades into the ugliness of "us versus them". Where even profitability ceases to be an objective.
Oddly enough, you seem to have convicted this driver, when it hasn't been mentioned once in the article that they were convicted, cited, ticketed, etc. in any of the cases. Granted, I'd be absolutely at a loss and astonished if they weren't, but harnessing that rashness to judge and convict is in part... where I find the unions still serve a purpose, among others.
Let's not mix apples and oranges, shall we? As I'm reading it, we have two issues here. The first has to do with the subject of the thread (which we've gotten away from) - the bus driver who reportedly has injured multiple people and even killed one in his "alleged" checkered past.
This, on the very face of the story from purely that story's viewpoint, is an outrage. And it also happens to sell newspapers and gets blog hits on the web, but I digress.
It goes without saying that this person gets his day in court. But if half of what is reported is true, this guy not only should be punished, but punished severely enough to send a clear message.
Enter Issue #2 - the other part of the outrage, the union.
As you've correctly deduced, there very much is an anti-union sentiment on these pages. After having worked around unions for some years and having a number of family members express the value of unions ("so that I get my money so that I don't have to do no work," is the recurring theme stated by my cousin), I've seen over and over again that common "goals" toward profitability and spirit of "fair play" is completely overshadowed by uncommon greed and corruption that has become all too common - particularly by the unions, though that's an arguable point.
At the risk of hijacking this thread even further, one of the largest elements in Detroit's failures (yes, I was born and raised in that area) is due to unions that, in my view, have gone far beyond the mere "oversight committee" that you're suggesting.
Historically, unions have been corrupt, ruthless, and contemptuous. In the distant past, when sweatshops were common and unions were needed to bring a semblance of control to out-of-control business owners, they served a role. Many, many changes regarding job safety were mandated and done, most of which by various governments. There's no question about that. Unions also saw to it that benefit creep and wage increases rose exponentially to the point where you've got a guy pushing a broom who earns $25 per hour plus an unbelievable assortment of benefits. (Little wonder that outsourcing is done - unions have priced themselves out of the market.)
But in this day and age where unions have crippled those business owners to the point that union grievances are filed because a non-union guy takes immediate action and resolves an issue on the production floor (the supposition being that the non-union guy "took" a union guy's job for all of 10 seconds), I think we've gone way beyond the "oversight committee".
Splitting ridiculous hairs seems to be the order of the day.
If I hadn't seen this myself, I wouldn't be talking about it.
But back to Issue #1:
Let's momentarily disregard this particular allegation for just a minute. Why is this bus driver even WORKING as a bus driver after he's killed someone with said bus? Isn't that some kind of showstopper? Is the union so powerful that common sense can't even be used to rid the system of dangerous people?