That's all great news. The 990 will do what I was hoping it would do, which is basically nothing.
In regards to bypass mode being a true & pure bypass mode; I shouldn't have said it would sound "terrible", just not as good if there was any kind of digital processing going on. I rather maintain a pure analog signal to my speakers once the BDP-83SE does its part.
In regards to the video circuitry being disabled in bypass mode; this is stated on page 14 of the manual under the heading "Bypass". I'm not exactly sure what that means, but I guess I will find out once I give it a try.
My BDP-83SE is in route to my home and I haven't been this excited since I ordered my 990.
Thanks Gonk and Koyaan for your help.