More cue in your shoes.
Vik,It is hard to say for sure without a video. I used to have the same problem when I would approach my max as well. I found it was usually the result of failing to get full extension at the top of the pull. Try to make sure you are getting your hips in fully and getting straight with your body before dropping below the weight. This is much easier said then done especially without a coach.
A while ago, I attempted a max snatch of 105 pounds (with ten-pound weight plates stacked on top of each other to be used as a way to rest the 105-pound barbell on.).I can pull it high enough, and there was a moment when the bar was in PERFECT POSITION and the only thing I had to do was stand up, which would've been very easy. However, before I even tried to stand up, the bar decided to just fall in front of me. Failed lifts.This happens ALL the time. Reccomendations please?Thanks in advance.