The document: Against the Heavenly Prophets.
In the Volume 9 of The Christian History Project, I found a section that complained about the tone of Luther in this document and how even his contemporaries complained about it. This is a recurrent theme in the book.
I just read the document and thought it was brilliant and important writing. I am fully behind it. No apologies. He had very weighty reasons to speak this way. The man had brains and courage and faith. Thank God for him.
Someone wrote a very long dissertation on this recently and seems to also think it important.