Same thing happened here. Found just the one I wanted, sitting on a dealer's lot but, "Hey, you know these things are hot! Our price is full sticker and NO X-PLAN...but we won't add any dealer markup." That was their attitude, even when I said I'd order and wait. It took me exactly seven minutes to drive down the road and find the next dealer more than happy to help me.
Don't forget to check for other incentives and rebates you may be entitled to, in addition to X-Plan: $1,000 cash, $1,500 Explorer/Mountaineer loyalty bonus, $750 X-plan bonus OR test drive/brochure bonus (one or other, those are not "stackable" as others are). Hey, when an Ex sticker price can top $50k these days, every bit helps!