My sense is that the AAIB have probably concluded it's a case of pilot disorientation, resulting in a high speed impact, drawing their conclusions from the 15% of the aircraft so far recovered. Hence they aren't taking the search any further. But they haven't entirely washed their hands of it so are in close communication with the family and project organisers.
Yes a professional survey company has been commissioned to "re-find" the remainder of the aircraft that the recreational divers located a week or so ago. And knowing those involved helping the family, the divers will have been well and truly briefed on what might usefully be brought up to the surface, not least the MFD so its flight data can be examined.
But the priority is to find the pilot and, as some have said, it is more about knowing where he is to give his family and friends some closure than necessarily recovering him to the surface, that is for them to decide as and when.
The latest update on the next phase can be found here. Please pledge your support via the link and Pledge button if you're able to help, the project still needs at least another £10k, given the length of survey / recovery required. Here's the Blog ......
Help Find Him