I wasn't speaking of Vincent's PCS, but indeed his PCS improved enough across the board in the fp for Vincent to move into first place after placing 6th overall even behind Michal Brezina and Paul Fentz in the sp, in addition to the other top skaters he later trumped overall with his fp scores.
Despite having more quads in the fp, I wouldn't say that was appreciably why Vincent's tech and PCS scores increased. I thought his scores in the sp were a bit low comparatively, even despite his mistakes. Vincent's scores increased significantly on tech and appreciably on PCS in the fp, especially for the fact he did not skate completely clean in either program. That's why I attribute a bit of talking to the judges which is not unusual in figure skating, since they all know each other. It might be as simple as asking for info re some of the sp marks and talking about Vincent's strengths to show how he's being backed.
Check out the protocols. All it takes is a slight increase which there was across the board on tech and PCS in the fp: increases of .50 on SS, .21 on TR, a whopping .92 on PE, .38 on CO, and .50 on IN
And this without substantial overall improvement in any of those categories. Maybe they just liked the choreo in the fp better. I'm not saying Vincent didn't deserve these average range of scores for the fp, as I do think he had been slightly held down in the sp. It's just that as usual, judging is manipulable and suspect.