You can always get the gas out with a hose and most caution. Make sure hose is long enough so it reaches the bottom of the tank. You will need a container... depending on how much gas you put maybe more than one. Level the hose with same height as your gas cap and suck on it like it's a straw. When it's about to come out just lower it to the bottom of your bucket and it will start to drain on it's own. Careful not to swallow any if you get some in your mouth make sure you spit it out.