[Davew]

One thing though - shouldn't the vapor come off the rear wings, and not off the canards?

Not really;
(From Wikepedia)Since the cores of vortices have a very low pressure, when the air is of high humidity, water vapour condenses to form cloud in the vortex cores, allowing wingtip vortices to be seen. This is most common on aircraft flying at high angles of attack, such as fighter aircraft in high g maneuvers

In a Canard airplane the higher AOA is comming from the canard as it moves quicker relative to the COG so it will vortix before the rear wings do

according to AERONAUTICAL RESEARCH LABS MELBOURNE "A canard above or coplanar with the wing delayed wing vortex breakdown"

I'm not sure you're quite on the money there...
Tip, or trailing edge vortices are produced by the pressure differential at the wingtip - high pressure air from the underside spills over to the top of the wing... That's why you see them at high AoA, because the pressure differential is greatest so they're most commonly formed.
The pressure differential is caused through the production of lift, one factor of which is the camber on the wing.
The main wing on this aircraft has a much greater camber than the canard. Equally, since the canard isn't an all-flying surface, it won't have a different AoA relative to the main wing, so the main wing should always be more likely to produce vortices than the canard.
Also, vortices are reduced by reducing the chord of the wing, especially at the wingtips. Relative to the main wing, the chrod of the canards is much less, so the vortices from the main wing should still be bigger and stronger with lower pressure cores and therefore more likely to cause visible tip vortices.

As a practical example, I've seen Eurofighters with tip vortices from the main wing, but i can't ever remember seeing them from the canards...