Finally came back to beat this, felt good when I finally see how I lost the steps. If these tricks are put in a bigger level I guess I will easily miss them and get stuck for long.
I have not seen a pipelining tutorial that focuses on this specific technique before. A cool one I need to watch for opportunities to use in the future.
You know, this level is actually pretty good. I would say that, this level teaches you something essential to learn as a player and uses a sledgehammer to reinforce it.
Beginners beware though; this is one of those levels that would probably drive a beginner insane, but is a must play for any intermediate+ player.