You should NOT "help" the seller in certain circumstances, no matter how pure, sincere and full of Godly intentions you are, if they are in foreclosure or pre-foreclosure and live in the state of MD.

The only circumstances that my spouse can use my VA loan benefits is if I was disabled for a specific amount of time, killed in action or a POW. 

This post is very uplifting as I have been really down because of life’s circumstances.

Usually the Veteran is using the "Change of Life" circumstance which means they are moving out of state, closer to work, school, or moving into a bigger home for increased family, out of a multifamily into a SFR, it also applies to retirees or disabilty if moving out of a larger home and into a smaller one due to up keep or mibility.Most VA loans have an assumption clause as well.

If you do these, you also need to clearly disclose to the original borrower of the circumstances of the assumption and the liabilities involved.

And really want to know if it would be feasible to purchase the property given some circumstances. 

As I see it this is the worst option to bank on appreciation as appreciation is speculative I've never personally used a HELOC in a similar circumstance so I'm hesitant to give advice on it.

However, he has been turned by multiple lenders who are telling him that although the VA allows for circumstances such as these, most banks will not approve these kinds of loans.

In circumstance, VA will approve the purchase of a second property.

I actually had a previous agent that called a listing agent and asked if they were open to offering seller help and if so under what circumstances.