I was there in 2005 and we were basically told point-blank that we couldn't open source _anything_ without running it by a manager first. This was at a time where all engineers were basically housed in the main 4 buildings on the north campus, so not yet all that big. Not sure what grace they fell from, but I found it to be a nauseating sanctimonious place even then.

According to the Twitter thread his manager is the one who announced it.