There may or may not be a political motive to Sir Alan Budd's surprise resignation  as head of the Office for Budget Responsibility. But what one can say with certainty is that claims that his independence was compromised will have hurt him.
A leading economist and a founding member of the Bank of England's Monetary Policy Committee, Budd has long prided himself on his willingness to highlight uncomfortable truths.
Earlier this year, as the clamour for spending cuts grew, he warned:
If you go too quickly, then there is a risk that the recovery will be snuffed out and we will go back into a recession -- I mean what the Americans say: "Remember 1937."
There is now growing evidence that George Osborne's decision to reject the counsel of figures such as our own David Blanchflower , Robert Skidelsky  and the chairman of the Federal Reserve, Ben Bernanke, is tipping Britain back into recession .
It was also Budd, as my colleague Daniel Trilling has previously noted , who correctly argued that the Thatcher government raised unemployment for political purposes.
Here's the key exchange from Adam Curtis's 1992 documentary series Pandora's Box:
Curtis: For some economists who were involved in this story, there is a further question: were their theories used to disguise political policies that would have otherwise been very difficult to implement in Britain?
Budd: The nightmare I sometimes have, about this whole experience, runs as follows. I was involved in making a number of proposals which were partly at least adopted by the government and put in play by the government. Now, my worry is . . . that there may have been people making the actual policy decisions . . . who never believed for a moment that this was the correct way to bring down inflation.
They did, however, see that it would be a very, very good way to raise unemployment, and raising unemployment was an extremely desirable way of reducing the strength of the working classes -- if you like, that what was engineered there in Marxist terms was a crisis of capitalism which re-created a reserve army of labour and has allowed the capitalists to make high profits ever since.
Now again, I would not say I believe that story, but when I really worry about all this, I worry whether that indeed was really what was going on.
The argument that the Thatcher government used unemployment as a weapon of class war is not an uncommon one. It's just that the sort of people who make it don't tend to move on to advise a Conservative chancellor. I expect we'll learn more about the real reasons for Budd's departure later this week.