When everything is ready I will light a cigarette and flirt the match around my head once, as if to put it out.

That will mean that the way is open.

Steal out of the back door and dodge to the stables; your mare will be ready, and when another chance opens you can make a break.

No one can overtake you, and I don't think it will be suspected who you are.
"If you succeed, I hope you will have sense enough to stay out of Wyoming, at least until this flurry is over.

If you are detected while trying to reach the stables you can dart back, for I don't think anyone will shoot at you, since we have orders not to do that until after you folks begin the rumpus.
"Inman means to set fire to the house to-night.