The seller might be bluffing, but if it's from the escrow company (or whoever does settlement services in your state) than I doubt it.

It’s a good enough deal that I am willing to put in the work to try to get a settlement.

However it has had issues with settlement.

This means the settlement company will not close the loan until the survey of the property is addressed. 

@Ophelia Nicholson, I dug up my HUD Settlement Statement on the property from Jan 15, 2014, my exact closing costs were $1071.55.

The borrower must have sufficient funds to cover borrower-paid closing costs and fees at the time of settlement.

Since your working out of a local office and since the seller has a vested interest in getting a waiver, you could potentially work out a settlement post closing.This will not likely work if deficiency rights are not allowed in your state.

Of course, I will go through my Virginia State settlement and title companies, but where do I get started?

Not generally, as to an attorney, they don't need to be involved with the transaction unless they are closing, many do and some areas require an attorney to close or settlement be under thier supervision.A CPA is not a requirement is any transaction, but large investors may employ them.

Having an interest in a contract, without money in it or reasonable consideration can certainly limit the claim as to a legitimate interest, if you can only show the value of the next sale, that value is subject to the sale closing and that interest is only established after settlement.