I'm fairly new at medium format (2 years). I was doing a photo shoot recently and made two rookie mistakes. I took the seal off of a roll of 120 film but realized that the back that I was going to load already had film in it. I accidently exposed the film in the back when I opened it. I figured that may have ruined a frame or two so I continued shooting. Meanwhile, the roll that had the broken seal unravelled a little. Is that roll ruined? I was thinking about running it through by taking some snap shots. What do you think?