Isn't Experienced Beginner oxymoronic? I mean, can you be both Experienced at something and be a Beginner too?
I'd say you need to practice your quick stops to the point that you can lock up your tires. Then you'll know the point that your tires lock up so you'll know when to ease off them.
I haven't locked up any of my tires on my bike so I don't even know how much force it'd take. I did lock up the front tire on the Rebel 250 in the MSF course and that wasn't fun. I quickly let go and reapplied the brakes, and I learned my lesson (Squeeze the brake like a sponge).
The way you described what happened reminds me of when I first started driving a car. I would hesitate because I was unsure of what I should do and I think that got me in more trouble. If I had just decided on one course of action it would have been much better.
Glad your ok. Hop back on the horse
