Cheating on your taxes is not comparable to moving a property to an LLCThat "due on sale" is a loan criteria that gives the bank the OPTION to call the loan if the property is sold (transferring to an LLC that you're full owner of shouldn't upset anyone though I concede this does violate due-on-sale).

However, on a different note the seller can't sign another purchase agreement (assuming you are backing out) until he signs your cancelation so IF they still plan to sell then they will eventually sign and concede your EM back 99% of the time but sometimes they drag their feet in doing so. 

If they don't concede, walk away.

Not likely.I do think it's really great you're trying to make this work and figure out your options - that's a good trait that will serve you well in real estate, but once you get to a certain point you need to concede and say "yea, okay this isn't worth it anymore."

I would think sales prices above list price indicates a frenzy or panic whereas below list means sellers price aggressively and concede a percent or two in negotiations.

Ideally I'd like to avoid any language that would require extensive record keeping of hours or wages expended, though I will concede that's probably the most responsible solution.  

I need to know which issues are detrimental and whether or not I need to ask the seller to concede on anything.

Louis County, although the company’s CEO concedes the number is higher.Tax records indicate Raineth Housing is delinquent on at least 558 houses, with nearly 350 homes owing back taxes for three years.News 4 Investigates traveled to Los Angeles to ask Raineth’s CEO why his unpaid tax bill totals more than $1.1 million in St.

If I breach the contract I can be sued for broker costs (which at that cost I might as well complete the deal)I am considering writing a letter to the seller, explaining it was an honest mistake and that I'm willing to concede the deposit at the least.

This should be pretty easy to get broker to concede.