The thign is he was probably owed lots of stock, as most senior people will get stock given to them, they've clearly said that it would be inappropriate to give him the stock he was probably owed as he'd sell it and it would look bad all around, so they gave him the pension instead.
Who cares, he's done nothing wrong, put it this way, if he'd done fantastically well his contract, salary, pension and stock options were ridiculous even if he was doing well. The fact he did badly is neither here nor there.
Do you all expect that if your companies have a bad year, or you don't magically turn the economy on its behind yourself which means your company loses money that you should suddenly have to give up your wages or pension? no, its ridiculous, an agreement was made and its fair to stick with it. THe agreement itself was questionable, the thing is its the people that MADE THIS AGREEMENT in the first place that are responsible here, no one else at all.
the banks were always going to hit this kind of time, its not their fault that car companies(as an example) have been overproducing at max capacity for years, have millions of cars sitting around doing nothing and are all going bankrupt, its the way of the world, we kept building faster and faster requiring less and less jobs the more efficient the process got and now we lack jobs. thats the cause of all the problems, there would have been basically no one in the world that could have stopped this from happening, though maybe softened the blow, there will be others in the world in the same job who would have made double the losses, such is life.
Brown is a numpty and as the OP said, he is simply passing the blame around at every chance he gets so it "appears" like theres a few key scapegoats and none of it is his fault.
To go after the guys pension to deflect attention from his up screwups is BEYOND a low blow, its just a scummy thing to do frankly.
Put it this way, footballers, most premiership players make a frankly obscene amount of money, the top earners on 100k a week + are on truly obscene amounts. But lets for instance take Adebayor, he had a good season last year, and got a MASSIVE pay bump he signed a new contract for 2million a year extra, basically a 100% increase yet he's been a total flop, Arsenal have been a flop compared to last year. SO now because we're all bitter we should revoke his wages because in hindsight it was a stupid move(ok to be fair in this case it was a stupid move when it happened in everyones eyes except Wengers

).
The point is, they are on an obscene amount of money to start with, success or lack of it doesn't change what they agreed to, the problem is the people who offered the amount to begin with.