So how do you Hard Reset the game when you have Firefox?
There should be a "Hard Reset" button at the bottom. It deletes your saved game, so you still have to refresh to restart the game, or it will autosave like usual on a ten second timer.
But you probably don't want to reset. There shouldn't be any stuck situations (send screenshot if you actually get one). And the game is short, an hour or two so if you're active.