Perhaps Customer Service would sell you two pairs of seats in a phone order. It's clearly within the spirit of the rules. While common sense can't be assumed, Customer Service has done a good job of problem-solving over the years.
NCAA Customer Service 800-208-0048
Given the new insight, I would NOT recommend making one order on-line, then trying to make a second purchase through Customer Service. That variation really isn't within the spirit of the rule. Call Customer Service upfront.
Last Wrinkle: But if anyone has already made a first purchase, yet now wants to purchase the rest of their allotment, call anyhow. In that situation, there's nothing to lose. The worst they can do is say no.
Priority 9, Today's The Day. You know the drill.