I don't think the sidestick was invisible to the LHS PNF or PM.
OK you have to look across the flight deck, unlike having a yoke in your gut, but even with the lights down you can see RHS sidestick from the LHS in a 319/320. I am prepared to be corrected by a 330 capt but I don't believe that the two cockpits are that different.
Chances are that the cockpit lighting would have been up somewhat if lightning was around.