I think the problem may be with using the standard presser foot. They aren't meant for quilting. For straight line or in the ditch it's best to use the walking foot. I vote yes on taking it out and starting over. Don't feel bad. I think we all have done something like this at some point. I had a thing like that that was a lot of stitches to take out, so I did only so much per day and put it aside. It took me two and a half weeks to undo, but it was worth it. Everyone on here will tell you to walk away, before you get overwhelmed or too frustrated or start hating it.