I last wrote about Mr Speaker Martin on this blog in November 2006, after he had blocked David Cameron from asking pointless questions about who Tony Blair would be endorsing in the Labour leadership election.
On that occasion, I wrote that while I sympathised with Martin as a victim of the snobocracy which seeks to belittle anyone from a working-class background who rises above his station, the media hostility towards him was entirely explicable in view of his legendary acts of pettiness towards our profession in the past.
Furthermore, the cirumstances of his election in 2000 showed the Labour Party at its very worst and, like much else that happened in the party between 1994 and 2007, was a direct consequence of the Blair-Brown feud.
Blair stumbled into it by appearing to support the election of a Lib Dem speaker - his favoured candidate was in fact Ming Campbell. It provoked a backlash from backbench Labour MPs which was then gleefully stoked-up by the Brownites in order to deliver a bloody nose to Mr Tony.
One MP, a very close ally of the then Chancellor, said to me afterwards: "It was a chance for us working-class boys to put one over on the public schooboys." That was basically code for: "It was a chance for Brown to put one over on Blair."
Had No 10 not made the mistake of seeking to involve itself in an election that has always been a jealously-guarded prerogative of MPs, it is doubtful in my view that Martin would ever have been elected.
However, while I don't think the election of Mr Speaker Martin was exactly the best days' work the House of Commons ever did, the important thing about it was that it was a House of Commons decision, rather than one imposed by the executive.
And that is what is troubling me about the current wave of demands for the Speaker to go - that if he were to accede to them, it would set an extraordinarily bad precedent over one of the few offices in our constitution which is genuinely independent of the government.
If such a precedent were to be established, a future government could use that precedent to get rid of a Speaker it didn't like. That in turn would remove one of the last bastions of House of Commons independence.
For this reason, and this reason alone, I support Michael Martin's right to retire at a time of his own choosing. Although I also happen to think he should choose to go, as Betty Boothroyd did in 2000, before rather than after the next general election.