As I understand it two witnesses were required at the hearing and they were Cardinal Burke and the Grand Commander (No. 2 Knight). They apparently took no part. If it were the case that the Pope allegedly told Cardinal Burke that he wanted Boeselager out, Burke would surely have communicated this to the Grand Master, No.1 Knight before the hearing who would have told Boeselager of this during the hearing.
There seems to have been a meeting between the Pope and the Cardinal prior to all this where the Pope was concerned about freemasonry in the Order and again allegedly, charged Burke with rooting it out. There is no solid evidence of any of this apart from what we read in the Tablet and the NCRegister.
I agree with you that the article is stirring things up and that we should await the outcome of the investigations.