If they are unwilling to buy in a benign economy, there is no way in heck they will buy when the economy is a wreck. 

Typical distressed sellers are because house is rental grade finishes, long DOM on MLS and unable to sell, or tired/unwilling landlord.Low money down.

If your agent doesn't understand how this works, I'd have them go to the listing agent and ask them exactly what's happening here.If the second lienholder does have this right and you're unwilling to pay the higher price I'd just tell them "no".

If they are unwilling to complete the form, that can be used as evidence against them later on.

We had a 2 day clause of no EM or OM with the initial offer, and they seemed to neglect or are unwilling to make that concession.

You made a verbal offer to extend the lease you sent over to sign, if they are unwilling to sign the new lease they are under no obligation to do so but you don't have to modify the lease if you don't want to. 

If current tenants are unwilling to pay market rent, you could refuse to renew their lease.

The tenant had a month to month, and was unwilling to pay the rent I wanted, so he said he’d move.  

I have had to answer the infamous late night roof leaking phone calls, and dealt with: leaking toilets, leaking water mains, faulty electrical panels, broken water heaters, broken furnaces, underground oil tanks, troublesome septic systems, late rents, tenants dog eating the walls, unresponsive tenants and every other real or imagined rental horror story that people who are either too afraid or unwilling to, use as an excuse not to invest.

They are unwilling to commit to longer than a 6 month lease, but depending on how long it takes the lease could extend up to 8-9 months if the home has fire damage or something else requiring major rehab.