Ah, and here he discusses, very briefly, the memory address in question adn the boot behaviour:

https://68kmla.org/forums/index.php?/topic/10261-video-playback-on-plusclassic/?p=109960

Turns out H3NRY was very active while he was here, until 2012, it appears.   I think his wife had health problems that may have caused him to no longer have time for these boards.

There's some very interesting hack-worthy info in some of his postings.  It appears he was the VP of engineering at Nuvo Tech, IIRC.