Before you call Ford Marketing on Monday -- you may want to go to ford.com without signing in to your account. From there, start to make a new order for a Mach-E (again, do not need to go far enough to sign in to any account).When I ordered I wasn't on the Forum and didn't know about and discount plans. I had just purchased my 2018 Energi at the end of the lease at that dealer and they (at the time seemed reasonable).
This way, you can pick different dealerships that you're considering purchasing through to find out if they've added markup.
Also, it sounds like your current dealer added $5000. Remember that $1100 is Ford's destination charge, which is non-negotiable and is the same for everyone's order.
Finally, once you've narrowed down dealers you'd consider, contact each of them to ask if they'll honor X-plan pricing. If they say yes, ask them to e-mail you that in writing. You still have plenty of time to qualify for X-plan (e.g. via MCA) and you don't need your discount PIN until you sit down with the dealer to do final paperwork at delivery time. X-plan sets the purchase price and sets a lower limit to how much the dealer can charge for things like doc fees. Basically, it forbids them from charging ADM, but only if they agree in writing that they'll honor X-plan for your purchase.