I'm sure that the ongoing SI will take a thorough look at the simulator training given to the RAF's Voyager pilots, particularly concerning AP disconnect, jammed sidestick and control priority procedures. Plus the associated aural warnings; for example the different nature of the AP disconnect aural warning when anything other than the AP disconnect button is used.
Perhaps there will be additional safety procedures introduced regarding temporary 'one pilot only' flight deck procedures and the importance of keeping the area around the sidestick base clear of any potential loose articles.
One point which must be made to the ignorant 'hang him high' people posting here, is that the Captain's integrity is most certainly NOT in any doubt.