Part 1
Mokantx, I'm not sure why, but I am more disturbed by this report than many others. Can you help me here. 

It appears from this story and from https://www.ncronline.org/news/accountability/minnesota-bishop-sued-coercion-blackmail-over-sex-abuse-accusation  that:

(1) The alleged abuse is single incident in 1971 of "unpermitted sexual contact," and it appears Gurndhaus has not been accused by anyone else--that's highly unusual, no? 
(2) The police were informed in 2011. So what happened to that police investigation?  Presumably we would have been told if Grundhaus had been charged? What should we make of that fact?
(3) There is no references to Ronald Vasek ever having put his accusation in writing to Bishop Hoeppner. Surely that is something any lawyer would have advised him to do in order to establish an irrefutable trail of the accusation having been reported?  
(4) So Hoeppner pressured Vasek in 2015 to withdraw in writing an oral accusation.