I saw a few beaut contrails the other day over the South Bay..
the one photo of the trail in question that appears to start at a horizon or close to it, shows a plume that takes a distinct bend to the right, maybe a 30-45 degree adjustment, shortly after it rises into view and then veers right.. not sure how a contrail might do that..
The prevailing winds will do that. I see bent contrails all the time here in the Albuquerque area. You can even watch the aircraft that leave them flying straight as a rail.
I'm not getting into the "Missile vs. Airplane" debate, just clarifying what happens to these contrails. Another thing about them, if the aircraft is flying at the same altitude, the contrail will hit the horizon at some vantage point due to the curvature of the earth. The ocean gives no vantage point.
One thing I noticed is the "base" of the contrail in question here is not really any wider than a spot farther up on the contrail, or more specifically, the spread of the contrail is fairly even and linear. It's all relatively thick. In the several pictures posted here of contrails from missiles launched out of the water, there is a huge deviation of the contrail/exhaust just above the surface level (a reverse mushroom). This is not present in the video from Monday.