They probably figure you're a risk of doing a touch and go to a legacy/fedex/UPS/SWA. It's probably nothing specifically personal, but they really hate being a revolving door for mil pilots. I was sort of one of those guys, except I really did give spirit a chance. The company mgt blew it by taking the pilot group to court over a massive lie and dragging their feet on the contract long enough that other interviews started rolling in so I don't feel bad about jumping ship, but... In my opinion anyone applying to spirit now ought to seriously consider it as a long term job instead of just a free type rating. Yea that's just my opinion.

Also my opinion - If you really want to fly for spirit for the rest of your career you'll probably have to corner a chief pilot and convince them in person. If spirit isn't your final destination, you really might be better off getting a quick offer from skywest. At least they don't get grumpy when you quit after 6-9 months 'cause they know it's coming and they'll happily hire you anyhow.