Well no more than I understand how OSS works and I can update the ClamWin scanner 3 or 4 times a day and it will download new signatures that have been compiled by different people... and from ClamWin site 'ClamWin shares the virus database with ClamAV and it is updated several times a day'.
I also see none of the problems that others (in the links you have provided) have seen, and no false flagging of everything (or anything) in archives. But then I am using ClamWin (based on Clam AV) I also use win 2000 so will not have the security problems XP users see and I use it with Win Pooch so I have all the things that Clam AV does not like real time file scanning thats rule based, an is able to scan the files that other programs open and use among the many other things it adds.
I cant find anything about the backing out if the tests, in fact then state in their forums that they were never asked, and the AVC people say that they will allow them in the next round of tests, but then talks about 'being asked by companies to remove the results'.
IMO if that was the clam* people that would have been said, Clam* also say in an open forum in May 2006 that they welcome all tests (something IIRC has been on the web site for many years), its also open source and as such not owned by any company 'per se', and TBH from what I have read it looks like the AVC does not like the software or something and is trying to put people off he offer no answers to question and just gives double speak.