I just called spirit, and they said they can help you get a discount on WDW tix. They transferred me, and I got a voicemail.
More info to come...
Edit:... more info. They totally got me. When I finally got through to the "preferred" ticket number, they said that they could offer "Disney's new MYW ticket, it offers a signifigant savings, and allows you to plan the trip that best suits you." Aaaargh, and to think someone was gonna help me get a discount.