It essentially means that there's no turning back. You're either going to go forward, or you'll die. So instead of staying back, you're going to burn the boats and go forward.
It's pretty cool in my opinion.
I like it. Also liked the game tn. 15 dollar beers made me leave with a few mins left in the first and second but the third I held er in and then pissed like a race horse after. Really good game. Can't wait to see a P-Game there or in Boston or MTL