He said he didn't have the $350,000 in cash because he had invested it all at the foreclosure auction.

There is also sometimes a restriction about reselling over a certain amount within a certain number of days.Second, if you are buying from online auction sites such as auction.com or hubzu (these are REOs, not foreclosure auctions) they will sometimes offer to pay for  title insurance, however, if you accept those, and there is a cloud on title, the insurance will be written with a exemption for that problem, which means your HML might not fund you with that cloud in place. 

And can I put a lien against the property and later push for foreclosure, if they don't reimburse me? 

If it is attached to the property is becomes part of the parcel and would remain during a foreclosure The mobile home if not converted to real property would belong to the owner and he may remove it much like a car   

I bought a 4 bed 2 bath split-entry foreclosure 2 years ago as my first home (and still live there).

There isn't a REIA terribly close to me to find wholesalers to talk to (Wareham I think is the closest), so I've been looking for bank foreclosures, online auctions, and Short sales primarily.  

I am digging through the paper and reviewing foreclosures.

Just a few services that I think of as important include vetting projects so investors have quality opportunities, managing payments, resolving problems (i.e. foreclosure) and tax reporting.I think alowing just any project to be posted would turn off every investor.

I am digging through the paper and reviewing foreclosures.

This is what he sent me, and I quote, "Over the course of flipping hundreds of real estate deals, I found that the very best opportunity to make money in real estate was through pre-foreclosure leads.Because this single lead type changed my business, and my life, I’ve created a special opportunity for you to get these leads completely free.Free Leads HereThis is a very limited time offer, so please don’t wait too long to take me up on it.You’ll be getting access to our complete database of millions of properties currently in pre-foreclosure, which is updated daily when new records are released.