dimsumexpress“ I guess the question really boiled down to the classification of the P.P. I always treated them with a passive approach which may or may not conform to the grammarian rules.
”
Unfortunately, as I see it at least, this thread is not about whether a word that looks like a past participle should be classified as a verb (in a passive construction) or as an adjective, though there are plenty of threads on that subject. Rather, it's about whether past participles of
intransitive verbs (which can never appear in a passive construction, by the way) are
generally usable as adjectives. Examples:
*the slept man
*a belonged wallet
*a left guest
*the gone people
*the arrived women
*a disappeared rabbit
*a died geranium
On the basis of just the few examples above, I don't think we can conclude that the past participles of intransitive verbs are generally usable as adjectives.

CJ