Take advantage of all the information available to you.

Looking for ways to expand my network as well as possible job opportunities. 

But it turned out, it was his roommate (who moved in without telling me, but turned out to be a good tenant) that was doing the cleaning up.

Give them a couple of options, they already know the unit got foreclosed, most people move to avoid the hassle. 

I definitely see what you’re saying about the seller backing out being a violation of your good faith agreement, and what is the point of a contract if the seller can just change their mind… However in my experience most people do end up settling for monetary damages incurred rather than trying to force the sale.

You could go into brokerage and sell properties, working your way up to brokering commercial properties. 

So when you actually assingn a pro rata interest and you were to run a title report your ownership would show up. 

Most decent lots are selling in the $50k to $60k range. 

To date all I've received is email communications from the sponsors stating the deal failed.

This includes all charges paid, utility accounts set up, renter's insurance established, lease signed, etc.