This won't help you now, but in the future, connect the positive first when connecting a battery and disconnect the negative first when disconnecting a battery. The reason for this is that you can't have arcing from the positive to ground if there is no negative connection because the negative IS ground and therefore there is no ground. If the wrench touches ground when it is connected to the negative terminal, even when the positive is connected, there is no arcing because, again the negative terminal IS ground. NOTE: you could still accidentally span the positive and negative terminals directly with a long wrench.
Gary and Pat Harkins
Dodge 3500, 2011 CF305SKP