Oh ouch that might be a bit over-torqued then lol. No biggie.
I don't usually have someone to help me, so what I did is I took a piece of wood and jammed it tight between my driver's seat and the brake pedal. Just cushion the piece of wood on the seat side so it doesn't damage your leather/cloth. Last time I actually used the case for my torque wrench to do the same thing.
You COULD use the starter bump method. This involves you using a breaker bar with a long pipe extension. You put the socket on the bolt, slide the pipe extension over the breaker bar, and lay the pipe extension on the ground on the DRIVER'S side. Go ahead and crank the car once very quickly. You should only have the key in the "start" position for like 1/10 of a second (just one quick crank), then turn it back off. Don't start the car. Go around and see if the bolt has loosened.