4everAD,
Flt Lts caught in that trap were all offered an opportunity to extend their commission to age 40 to make sure they'd get AFPS15 EDPs. As AFPS15 service counts from age 18 (unlike AFPS75 which counts from 21 for officers), most serving to 38 would be pretty close to it anyway.
I know a few people who've extended between 2 and 5 years to get it.