This story is a good example of why big companies have a hard time allowing customer facing employees to give waivers to good customers. Having OPs legal team involved makes it easier for SPG execs to say in the future, no exceptions.

I think the problem started when OP thought he was going to be able to renegotiate the the deal again. Luckily, it seems like the OP would have the means to just pay cash for the event tickets if he wanted them so much, and it would have been a better value than buying more points.