Okay, I'll do it. The explosion is not what caused the straight line.
Follow along: Big explosion and fire on lower floors (I won't distress you by saying "plane"). Presently, the now-unsupported floors above the hole fall down. The collapse follows the lines of the building supports . Look at the pictures you posted. See how the top part of the building is still attached on the right side, descending at a diagonal to the left? Sort of like a hinge that swung down on one side?
The pictures you've posted are not an illustration of what the explosion did. They show the consequences of what the explosion did. They weren't taken early enough in time to prove your case. They're from many hours or even days after the initial blast.
Now, get busy on that passenger list. There aren't that many names.