I am so confused....
 

Today my bike just cut out twice. It only happens once and its when I just start going after a few feet. The whole bike doesnt turn off, just the engine. All I have to do is flip the engine stop switch off, then back on. Start the bike and im off, and it doesnt happen again.

Then I get off somewhere, and it sits for a while, go back on. Then its rinse and repeat. Only happens once and I just dont know where to begin

Try bypassing the BAS temporarily, and see if it still does it.

Make sure the start/stop switch soldering hasn't failed.