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.
I guess what intrigues me and it may be as others offered , nothing unusual per se,, the bottom of the pic on the left above looks like a boost phase and luanch from a sub.. the 2nd stage kicks in causing the slight bump and then jaunt to the right and upwards.. any wind charts available for that timeframe? ;-)
I will admit it would be nice to have a time lapse web cam of that general direction ,, cuz ya know how some minds here are never really at rest, well, not for long when something looks a bit out of the ordinary