Hard to understand your post but am assuming you are saying that the individual acting on behalf of the seller was assumed to be an agent but you are finding out they are actually a wholesaler?

Connect with investors in similar situations for insights.

I think I have a generic contract and assignment in my files.

Glad to have you as a part of this awesome community, Simon! 

This is still pretty complicated. 

you need to dodge capital gains and foreign buyer tax.. you should consult a tax expert..If I was in this situation I would just sell (not advice) and buy a cash flowing mobile home park in the midwest

I deleted it in this post but I plugged it in.

It might take some digging, but you can often find the information you need.

It will be remote, but since you live there now, you probably already have connections who either already know the house or local friends to find you good people to service things as needed.  

Typically lender will want to see first paycheck before you close.Maybe rent a room in a house hack (we have one coming up in Little Elm if you can make the drive) save some more money and buy a house.