Let the bed cool down all the way, ya little gremlin! If you absolutely can't wait, put the bed on a tile floor and your print should pop off on it's own pretty quick.
If it is a removable bed, pop that bad boy in the freezer for a bit and the print should pop off. If not then you may want to try some glue stick on the bed before a print which will help the print release since it'll pull off the glue.
This is a glass bed on an Ender that I am doing this on. I haven't had any issues with scratching the bed whatsoever. Mild steel is actually softer than glass so it might actually be harder to scratch than you might think. Your mileage may vary though.