Just poured another glass of the mild..still lumpy, still cloudy.
Thought that the flow was slowing down so gave it a CO2 blast....bad idea, the valve whined, the tap fizzed, the beer bubbled! Ah hah...there's my problem.
The whole keg is still fermenting, it just hadn't finished in the fermenting bucket, as I suspected. So, I have two gallons of tasty beer, but drinking such would cause much ruffling of the nether garments and loss of friends. One to chalk up to experience.
Time to brew up again, methinks