Interesting, this probably doesn't go good with squats and deads though.
I was actually concern about fatique for missing two attempts then hitting it. I did hit a back squat PR a few days later so it was pretty good but i'm burned out since the squat. Drank too much booze since however.
if you are feeling fatigued from your training, try more protein , it might help, plus, the booze will severely diminish your healing from training. also try conditioning on your non weight days and drink tons of water.
A big part of the classical bulgarian method involves missing a lot of attempts. I've read some stuff about weightlifters needing to attmept a weight 10-20 times before they can get it. Most of the time, the strength is there but the lifter just doesnt know how to lift the weight yet.
While you got your third attempt, I don't think you did it very well and it was ugly as shit. You would have been better off leaving it after the first time and trying it again in a couple of weeks. You would have probably smashed it and gotten an even better PR. I've been there many times and it is an excercise in diminished returns. You wasted a ton of energy, both mental and physical to achieve a really bad technical lift, that you could have made even better and easier the next time instead of banging your head against a wall. IMHO it isn't the smartest way to make gains.