Modification of terms: I say that there is also at least one other PM, in addition to the one to Wilhelm (which I did not know about).
Accruing evidence of habitual PM-begging.
I believe that it may well be acceptable to describe some contents and context of PMs.. but it is generally not a good practice to either disclose them or offer to expose them.. and I am not sure if the fact that such PMs might break forum rules would be enough because there is already a remedy for that, which is to hit the report button within the PM.