Olderer altered his BH over the years. It used to be a mostly flat drive that he used to go for wild winners and he used to hit amazing CC/DTL shots with it - but it led to a horrendous amount of UE's when pitted against Nadal's monstrous tospin lefty FH. These days, Olderer rarely hits BH winners, instead he has modified it into a more stable, grinding shot, designed to keep him in rallies and minimize errors. I actually applaud his ability to adapt to slower/higher bouncing courts and recognizing that his BH will never become a weapon on them - merely a solid shot that isn't a weakness.
You are probably right but I miss those backhand DTL winners he used to it in his prime.
Now he hits them very rarely...