I have to say I think he and Jerry have gone about things the wrong way, especially this year. In the past, what made Evan successful was getting so strong that he could move to the lead from 800-1000m out and hammer. That's what almost won him the race in Paris.
Recently, he has decided to work on his last lap and his sprint. He will never have the speed to do this. Not only is he now not able to kick on the last lap, but he is also no longer able to kick from 2-3 laps out. Beyond this, even if working on his speed WAS the answer that would put him over the top - it would taking racing much more than he does to get him there. 4 races in 6 months won't cut it. He would need to race Steeples, 1500s and 800s with relative frequency to really get used to running at that pace while lactic.
Evan's best bet is and has always been getting so strong that he can be in 12'55/7'55 shape and hammer from a ways out to drop the field. He seems to be stuck in a sort of limbo now.