This applies with most all crops, proper spacing is a must.. Not to mention with planting so close together, it will be like a xmas light affect if something goes wrong.. It will spread from 1 plant to the other faster then if you would have spaced things..
No, you run it through and learn your lesson from it. If you didn't learn that this was a bad idea then your complete grow was a fail.. It wouldn't matter if your plant pulled 5 lbs "it wont", if you didn't learn anything then it was a complete waste and an utter fail.