I'm wondering if something mueller-related has spooked him and he's jumping ship to disassociate
You should delurk more often, Brexistential. 
In fact I would love it if more of our lurkers dipped a toe in from time to time. When we are all in the doldrums persisting it's good to know there are lots of us out there.
Re: dingleberries, I thought it was Aussie slang for the claggy bits of poo that cling to sheep's fleece around their arses. Or maybe that's the origin of 'daggy'. Saffron - can you help?
Like others, this is the first place I check to see if there have been developments & then head off to the mainstream media to fill out the detail. 