MBenz, I am hoping the issue is a sending unit issue also! The one in the sump is a easy swap out, just replaced the O-Ring last oil change. However the sending unit on the back of the oil filter canister looks impossible to get a wrench in place to remove. I just happen to have a complete spare motor in the garage (long story), I think I will borrow the sending unit from the oil pan and see what happens.
I am with you when I saw this happen it freaked me out as well and went through the window exercise also. Seemed to be no change in the music.
I have a thing for getting the little car to triple digits as part of my after work purge ritual, it feels great!