OK. I have read substantially more than enough....

I can see both sides to this episode and emphasise that I take no side, other than that of the OOF admin trying to create sense out of apparent mayhem.
I again make the following comments.
The sale was conducted on e-bay, not OOF. Indeed, the item was not even offerred for sale on OOF. E-bay has assorted processes whereby persons in dispute can resolve, whether you agree with the mechanisms or not. Consumer law applies and thus the correct route to remedy this must be taken. That is not OOF.
Whether one/other/both involved in the matter is/was a member of OOF has no
direct bearing on the matter, nor does the level of postcount of those involved.
Bear in mind that the use of certain words in a medium such as the internet can be considered defamation. Heres the Wikipedia definition of defamation....
In law, defamation (also called vilification, slander, and libel) is the communication of a statement that makes a false claim, expressively stated or implied to be factual, that may give an individual, business, product, group, government or nation a negative image. Slander refers to a malicious, false, and defamatory statement or report, while libel refers to any other form of communication such as written words or images. Most jurisdictions allow legal actions, civil and/or criminal, to deter various kinds of defamation and retaliate against groundless criticism. Related to defamation is public disclosure of private facts which arises where one person reveals information which is not of public concern, and the release of which would offend a reasonable person.[1] "Unlike libel or slander, truth is not a defence for invasion of privacy."[2]Desist in the use of such terms on OOF. 
Again, I will lock this thread as open forum is NOT the place to resolve this, it has nothing directly to do with the sale, and could easily render posters liable to potential legal action and by default, involve OOF as a whole. Remember what happened to the Volvo forum recently. It had to close for a while pending expensive legal and Court representations...