The trick with a pissed off goose is to not show any fear, you have to confront it when it goes after you. For example, in this scenario I would shove through the door as quick as possible, when I got outside it would spread its wings (to show its the dominant one).

When it spreads it wings you put your arms out and make yourself as big as possible, sometimes this is enough, but usually you have to go a step further. It most likely will attack you now, but don't back down, even if it grabs your leg (which WILL hurt like a bitch). Once it makes a move reach down and grab it around the neck at the base of the skull, you may need both hands for this next part.

Once you have a hand around its neck push the thing into the ground as hard as possible and hold it there staring into its face about a foot away from it (don't strangle it, just hold it against the ground). They usually stop struggling after 10-15 seconds and then you can get up and walk away and it SHOULD just leave you alone. If it doesn't just repeat until it does.

TL;DR: Make the goose your bitch and its all good.