Sorry about your getoff! A crash is never welcomed but can be a good learning tool for future reference.
Looking at your photos it was a series of mistakes, not just one that got you into trouble. It appears from the looks of the front tire you were on touring tires? Maybe Avon Storms? If so, mistake number one.
Looks as if your butt was off the seat but you were counter leaning with your upper body. This increases the lean angle of the bike for a given speed without tightening up the turn radius. Mistake number two.
From the looks of your front fender/nose cowling the forks were compressed. Since your fingers were not over the brake lever, it tells me you had the throttle completely closed. Mistake number three
As soon as you felt the front tire loose traction, give the beast a little throttle to unload the front tire by transferring some of the weight to the rear where there is a much bigger contact patch. Doesn't take much, maybe an eight of an inch of throttle if you are at neutral throttle, more if the throttle is closed.
Bikes HATE coasting while leaned over. A closed throttle is by far the most common cause of corner crashes in both novice and intermediate groups.
There is no shame in crashing, most all of us do that nasty deed eventually. Use a crash as a learning tool and file it away in your skill folder for future reference!
I'm glad you aren't discouraged from track day fun with your buds. You may be well on your way to an addiction!