Laying one bomb for the recovery doesn't really help the needles problem because shiek can still jump and hit you with them when you trying to get back. Thats just a situation that I don't think you can win.
Edge guard full charge shots are all i got from that video. If i missed anything else, let me know.
ok i think you missed the main idea, fall from high above with samus, you can't change direction so fast, if you get hit by a needle you can hardly fall at an angle at all, but wait...MINDGAMES one bomb and hold toward the stage and you get the "almost 45 degree" angle again, this helps you come steady toward the stage.(no "bomb jump" just lay one bomb at a time as u fall toward the stage until you are close enough)
in a regular bomb recovery you hafto almost stay on the spot, cause your bomb goes straight down, with your bomb doing this and the fact you must be close enough to it before you get the bomb jump, you must go down a bit, and sheik needles you in this you go down, get hit by a needle, and you lose the chance to get the jump toward the stage, so you go down for nothing and you are to low to recover soon enough.
does this make it more clear?