So I was playing on a world with a friend on windows 10 edition when I got bored and started playing with command blocks. I wrote a command that summoned a pig on every pig . As you can probably already see this is quickly going to be a problem. I however, didn't see this issue.

I ran the command and was greeted by the sight of maybe over a million pigs within a few seconds. My game crashed and now I can't open the world to kill the pigs. I've spent close to 400 hours in this world and don't particularly want to loose it to some pigs so anyone have any ideas what I can do to try and fix this. I never made a backup before this point so that is out the window .