D.A. fan is back for an ME1 Text Only 'Let's Play' (page 51)

Hm. A couple other random bugs I never had did pop up, but the more annoying ones like absent sound are fixed. I had one in ME2 where it went silent during the fight between Samara and Morinth. :srs:  But I haven't been having any other problems so far. Just playing a standard edition.

Do you mean just uninstalling the game itself or removing specific save files? The second isn't possible other than through the game itself, which is annoying. For the first:

Go to All Settings--System--Storage--Manage Storage--View Contents (or if you have a shortcut to your games/apps use that), then hover over Mass Effect and press start, and you should be able to uninstall the game, then reinstall.

Just might be wise to make sure any files you want to keep are synced in the cloud just in case (I get paranoid about my saves). I've tried checking them through 360 cloud storage once when I was playing ME1 and they were there. I couldn't copy them to anywhere, but I could see individual save files, which you can't do on One.