Regarding the above trailer....I watched it and there is no EEV crash scene in it....maybe you have the wrong trailer linked.
I think he was refering to the Alternate Clemens segment at the beginning. That shot wasn't featured in any cut of the film, not even the workprint.
It was intended at one stage that Clemens walks along and witnesses the EEV crash and the opening scene in the trailer is a shot of the original sequence.