Hanged is a weak transitive verb. In most conventions, yes, it is used exclusively for people. Hung is most often used as a much stronger transitive and often not for people. But there is no hard and fast rule for it.
I use HANGED exclusively as a transitive verb when referring to someone being HANGED, as in an execution or as part of a Cartel narcomensaje.
I use HUNG only for people who have HUNG themselves. Just like a HUNG jury is not a HANGED jury, because the jury can only hang itself, so to with people, as far as my personal reporting conventions are concerned.
So is it really correct to say "Well Hanged"?
Not that I have ever been accused of it.