LOL....you are not the first...trust me.
Try to push it out with an appropriately sized cleaning rod from the muzle
Try sending a blast of compressed air down the barrel from the muzzle
Pour some oil down the barrel and repeat above
Last resort(s): Fill the barrel 1/2 up with water, fit a wooden dowel that fits closely in the barrel down till it touches the waqter, then give it a huge smack with a hammer to hydraulic it out.
Remove the barreled action from the stock, remove the trigger group, and go at it with a propane torch, getting the barrel HOT. You should be able to get the swab to melt before hurting tha barrel at all.
Ryan