Snatch practice & High box jumps Workout

I went to the GF YMCA early this morning and did a non timed couplet of snatch doing about 5-6 reps per set and doing high box jumps at about 36" for about 8 reps per set. I did the box jumps as singles and didnt' rebound off the floor.
I noticed with my snatching that my left foot was jumping off the floor and going out, but often times my right foot was not really leaving the floor and was not moving outward. When I noticed that, I tried to concentrate on really jumping up and moving BOTH feet. I felt like I was exploding and opening up my hips better as well as well as landing better in the catch/ hole.
My right knee is pretty sore today and all evening yesterday as well. Could be related and I'll have to do some snatch balance with this in mind as well.
started with 45 lb bar,
65, 75, 85, 95, 100, and then 105 lbs for a bunch of rounds