Let's see, you are pretty shortstacked and the blinds are huge compared to your stack. The big stack opens which he could do with any two cards. You look down at 55. I'd push instantly. Don't care about the bubble, you wanna win this.

12,585,434,400 games 27.802 secs 452,680,900 games/sec

Board:
Dead:

equity (%) win (%) tie (%)
Hand 1: 60.3249 % 59.64% 00.68% { 55 }
Hand 2: 39.6751 % 38.99% 00.68% { random }

At worst, i'd imagine him to have two overs which is a coin flip i'd take any day in this position.