I noticed some berry bushes around that still had berry's that didn't look quite ripe yet. Im hoping that will be the key once they ripen he will be back and hopefully im there waiting.
I think you are on the right track. This time of year it is all about sugar! If the berries you are seeing are not ripe they are going to be where they are ripe. They have a short time to put on their fat and they won't be wasting much effort on seeds and grubs if ripe berries are within reach.
That pile doesn't look to have any berries in it. And it does look to be old. So I'd expect you are at least on their travel route and they should come back around as things ripen up. Patience!!
My top two producing spots were nearly void of ripe berries this last Monday. I made a short walk through and without the berries I quickly moved on to spot #3. Spot 3 had a ton of ripe berries! And we kicked three bear. If we had been able to see further than 100' through the fog I expect there would have been fresh bear in the freezer!
I have no doubt that come mid-September those primary spots will be producing once again and the bear in spot #3 will be working there way up the canyon to those spots following the sugar! And the best part is they will be gaining weight all along the way. Those late September and early October bear are tanks...well worth the weight and patience!