Just responding to a post you made on a talk page. There is a prelude comic (I think it is for the Avengers), that shows what Hawkeye was doing during the events of Thor. It includes him visiting the gas station Coulson stopped a robbery at and also arriving at the crash site. It then shows the scene we see in Thor and also shows him noticing Jane. He then tells Coulson of this and that's why the let him go, to track him. So understandable, but it is true.
I changed the Kaecilius article in question to reflect our current knowledge of the MCU canon. If you have a problem with a person's particular edit, I suggest you leave a message on their message wall instead of using the talk page. Just a tip. Have a good day.