I'm not taking sides with eBay or PWCC. But here are my observations against ebay. (I could have observations against PWCC but thats not for this post)
PWCC has started the premier auctions (very high end collectables) on their own website, and not using eBay.
And they have already been building up their in house platform because they always wanted to be independent of eBay.
eBay of course knows all this. So WHY NOT try to tarnish PWCC's reputation while they still can, after all, eBay is a direct competetor to PWCC.
Just food for thought.
P.S.
Shill bidding ALWAYS existed in EVERY platform, modern day shill bidding was probably invented on eBay.com as a whole.