The 30-year-old suffered a torn elbow ligament injury just three weeks before the Games when competing at the London Grand Prix, an event she won, and failed to qualify for the women's javelin final.
And although the winner of a record-breaking ten straight UK Championships, Sayers is still searching for her first international medal and Backley admits getting over her injury may prove to be a very large hurdle.
But the former javelin world record holder believes Sayers has the mental capacity to throw further than she ever has done before and firmly banish those memories with the World Championships in August the target.
"Last year turned out to be a bit of a disappointment despite the fact she did superbly well and got herself in great shape," said Backley.
"The timing as much as the severity of the injury at the Olympics was very unfortunate so clearly her main focus this year will be to get over that.
"But it could possibly haunt her and so half of the challenge will be to get rid of all the demons and pain and any negative thoughts about it.
"That will be a challenge to be brutally honest. Those thoughts are always in the back of your mind. That is where she is at now. It will be a challenge for her, but I think she will be comfortable with handling it.
"If she can get over that setback, which hopefully won’t become an issue, she could end up with a World Championship medal.
"There are four years left and she needs to get on the rostrum at one of the big Championships. That's what she needs to do."