It occurs to me:

If Eliezer accomplished the AI Box Experiment victory using what he believes to be a rare skill over the course of 2 hours, then questions of "How did he do it?" seem to be wrong questions.

Like if you thought building a house was impossible, and then after someone actually built a house you asked, "What was the trick?" - I expect this is what Eliezer meant when he said there was no trick, that he "just did it the hard way".

Any further question of "how" it was done can probably only be answered with a transcript/video, or by gaining the skill yourself.