In an interview with Golwg360, Rhodri Glyn Thomas says that it is a lack of political discipline which brought about the undemocratic culture in Carmarthenshire County Council, adding that decades of coalitions with the Independents in permanent control has meant that officers have developed more and more power over policy.
His aim is to secure a clear Plaid majority on the council as a first step towards restoring political control by elected members.
Rhodri argues that Emlyn Dole has made some progress, but that reliance on the Independents means that there is still a long way to go.
Rhodri Glyn Thomas, who stood down as AM for Carmarthen East and Dinefwr at the election in May, has announced his intention of standing as Plaid candidate for St Clears in the May 2017 county council elections. The seat is currently held by Independent Philip Hughes.
It's fair to say that Cllr Hughes has not made much of an impression during his long period in office. He served as a member of Meryl Gravell's cabinet, and made one of his very rare contributions in defence of the indefensible during the EGM which debated the chief executive's unlawful pension and libel indemnity schemes.
At the time hacks who had been exiled to the public gallery were sent into a panic. "Who the hell is that?" several of them asked in audible whispers.
In an interview with the BBC, Rhodri said he wants to protect the local leisure centre from cuts and challenge the "democratic deficit" where "officials run the council".
"We need to ensure elected members run the council", he added.
If you listen carefully, you can probably hear the sound of pencils being snapped in the Executive Suite on Jail Hill.
It is unlikely that Rhodri is on Mark James's Christmas card list. Earlier this year, after almost a year of asking and several very curt rebuffs, a constituent, Mrs Trisha Breckman, finally succeeded in being granted an audience with the council chief executive to discuss the appalling treatment she had received from the council over the last 15 years.
As is common in such cases, Mrs Breckman let Mr James know that she intended to bring along a representative to support her in what was likely to be a very difficult meeting. The representative she chose was her AM, Rhodri Glyn Thomas.
James immediately replied with an angry e-mail cancelling the appointment. He would consent to Mrs Breckman bringing along a friend, but "Rhodri is not her ‘friend’ he is the AM, at least for now. In my view, that is extending the meeting to include third parties", he wrote sniffily, before adding that he was no longer prepared to meet her.
So now we know. You may have been elected by a large majority to serve the people of a large chunk of Carmarthenshire, but to Mr James you are just an interfering third party.
After more behind the scenes shuttle diplomacy, the meeting was eventually rescheduled. Minus the democratically elected Assembly Member.
More on this extraordinary and deeply disturbing story in due course.