She's thinking that its cheaper for you to do that the fight it all the way through. 

But be prepared to fight with the current owner tenant down the road...

Maybe, but I'm fighting the "addiction" mentioned in the video and making a move while it's still "up".

If you are a real estate investor in South Carolina and you are finding good deals in which the numbers work, you will do well irrespective of what goes on in Greece.If this is more of a hypothetical question, if everything blows up in Greece and Europe, then look for more monetary easing by the US Fed (i.e. lower interest rates) to fight contagion spill over effects.

He's asking whether it's worth it to fight to recoup lost rent from the prior months.

As the tenant there could be claims of intimidation and false imprisonment.What if the intrusion did not result in a sale and now the tenant is so pissed that they are fighting any attempt to show. 

Don't get greedy, but if you sell for 100K, then that will give you 20K profit on your first deal and you might have some builders fight for it, if that's a low price in the area (which it may be).Those builders will do your due diligence for you, because they know what you're looking at, so, you want to give them not more than 5 days for that. 

My question is what can I do to fight this?

I'd find some constitutional group and see if they'd be willing to fight that fight.

IF they dont fight you you get the deed then.