"Recall that RVX had not changed a single thing in their presentation for months.  So I am absolutely sure that it was done after 4pm EST Friday (close of trading)."

True for the corporate presentation slides deck. Not true for website. They have modified various things in their website over the past month or so (presentations, news releases, homepage banner text, etc). Diagram change on website could have happened a while ago but no one noticed until now. 

BDAZ