Does this make any sense whatsoever??
There are a few holes in your theory.
RA was set to 60 m. You can find it on the transcript.
The autopilot thing is a little bit tricky as it wasn't a standard Tu-154M. We don't know how it was coupled to the FMS and other new installed equipment . What amendments were added to the original, Russian FM and how the crew was trained to use the new equipment.
Arrakis