This is from "Reflections Newsletter" with Rataczak.
His instructions: Cruise at ten thousand feet. Gear
down. Flaps 15 degrees. About 24 minutes out, 28
miles north of Portland, the second officer’s
annunciator panel indicated that the rear stairs had
been lowered. The crew did not know for sure that
their hijacker had jumped until they landed in Reno.
24 minutes out, 28 miles north of Portland?
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No mention of oscillations or bump or last communications with Cooper ~8:05.
Note that the 24 minutes and 28 miles from Portland don't agree. You could drive down I-5 faster than that, which is only about 65 MPH (which would be ground speed). I suggest that one or both of those numbers is incorrect.
You read my mind!
There are public presentations my friends at Rockwell refer to as "toilet paper presentations" - you could wipe your XXX with them. Surely in that NWA audience there were people wondering 
? What more can you say? You smile and shake hands and go home and have a few stiff drinks... you try to pick the pieces up the next day without offending anyone! and you pray the donation checks don't stop!!!
R99 what do you think of Wally's remarks?
First, just who is Wally? I don't see any identification for him. As far as the jump time goes, Soderlind insisted to Tosaw that it was 8:13 PM. And frankly, that time seems to be very accurate (to within a minute or so). However, Soderlind was plotting the first jump zone within a few minutes of that time and there is no indication of where he got the position information that he was using. And he had the jump zone finished long before the airliner even got to Reno. So Soderlind could not have used FDR data.
Soderlind probably got the information he used through the phone patch and teletype messages that were sent to MSP through the ARINC network (which is now owned by your friends at Rockwell). This brings up another problem. Fred Poynter and his staff at WSHM went through all the messages on that roll of teletype paper that was loaned to WSHM for a short period of time, and concluded that several messages were missing. That is, either the NWA people or the FBI "redacted" some of those teletype messages.
So when Soderlind drew up his second version of the drop zone, did he have access to the un-redacted Seattle ATC radio transcripts and the missing teletype messages? There is no conclusive answer to that, but he apparently came to the same conclusions about the 8:13 PM jump time and also that Cooper could have landed in the Columbia River.
But determining the aircraft's location at the jump time is the big problem. And from what I can see, that information is just not available at the present time.
