I swear I know a guy who would have done this. I have worked with him. I have cleaned up his code. I have asked him to clean up his code and been yelled at in response.
Pretty sure we all do. The constraints under which he was operating to create the mess I took over I understand well, and I do not blame him for the end result.
He is a manager now, though, not a day-to-day programmer ;)
