Hi HK,
Lots of improvement in your TFR, but as far as flexion goes, I'm not seeing it. There isn't much flexing going on at release. In fact, your legs seem to remain in the same slightly flexed position for the entire turn. Like many other things, flexion is a continium. On one side you have simple relaxation of the stance foot to allow gravity to pull you into the new turn. On the other side you have aggressive retraction, or pulling the knees up towards your chest so your hips can take the shortest path to move into the next turn. Your legs are shortest at transition and they will extend as they move across the hill while your CM continues on a more direct path down the hill.
If you dig up Harald's "bring out the expert skier in you" video:
http://www.harbskisystems.com/hblog/hblogindex.html, pay attention to the section where Harald and Diana are skiing together (starting at 2:49). You can really see the flexion that occurs as they move through transition. I find the view from the back as they pass the camera is especially good for seeing the flex, since you can really see them sucking up their knees and then you see the legs extending laterally. That level of flexion is more towards the retraction end of the spectrum. If you keep watching, you'll see Harald demonstrate brushed carves right after that and you will notice that he is using a much less aggressive level of flexion.
Do some boot touch drills to start experiencing deeper flexion and then play around with it. Exaggerate! IMO it is easier to fully flex at transition with an edge locked ski, so you might try that first. Then try to do some brushed carves with full retraction (somewhere there is a video of Max_501 doing this). When you do this with brushed turns, there is less energy involved with release and the slow-mo nature of the transition will really help you experience what is going on when you fully flex. Do a bunch of those, and you'll have a good feel for how much flexion you'll want to use for any given turn.