No -- what we're telling you, essentially, is that there's nothing particularly unusual about your IRROPS, and that when you chose to "tell a supervisor that I am going to have to book flights home directly and will request reimbursement, hang up the phone," (your words, from the first post) you essentially let UA off the hook for any obligation to do anything more than offer a refund, which they've done.

You appear to have been frustrated by the fact that UA originally pushed your tickets over to DL improperly -- a common issue, as has been mentioned a couple of times; it's one I've experienced myself. And you were further frustrated by the fact that there was nothing further UA could do, and by the fact that it took five hours on the phone to reach an ultimately unsatisfactory conclusion. The latter is somewhat unusual, but less so on one of the busiest travel days on the calendar.

Nobody is arguing with your frustration, and there are many people on the thread who would have made the same decision that you made. But your proposed court case is essentially resting on either (a) UA not bothering to defend themselves or (b) getting a judge who doesn't like airlines. In small claims court, neither of those are impossibilities -- but the law and the contract are both on UA's side here, and as another poster mentioned, you're likely to lose a lot of sympathy when you get to the point where you hung up on the UA rep, essentially making it impossible for them to continue to help you.

You could also try the technique mentioned upthread of trying to escalate your complaint within UA by writing into their executive team. I've seen some reports from posters who had even less of a case than you have, where some executive was apparently in a good mood and decided to acquiesce to their demands, so it might be worth a try.

At the end of the day, though, this was your decision, not UA's.