I think it's in transition. There's a detectorist Member too but he's in process of being replaced. The retiring one is Trevor Austin, Chairman of the National Council for Metal Detecting. How could that list, plus him, be accused of deliberately fiddling the valuations? Seems unlikely.

From the Treasure Registrar's Twitter feed:

"196 people waived their right to Treasure rewards last year, helping museums acquire finds at less expense. Here's 1: http://finds.org.uk/database/artefacts/record/id/519548"

and from the Treasure Registrar website:

http://finds.org.uk/database/artefacts/record/id/532283

"Disposition: The finders, from the Weald and Downland Metal Detecting Club, as well as the landowner, waived their right to a reward for the addenda coins to allow them to be acquired by Guildford Museum at no expense."

Not all bad news :)