Interesting tactic. 

Sometimes that tactic is used at open houses for retail sales too.

The problem I have is though everywhere I research to learn a new tactic or am interested in a "guru" I have to drop tons of cash to buy into something that I have no guarantees their "snake oil" is the trick.

Strategies and tactics used, lessons learned, etc.

, they are stalling with title work which I don't think is an actual issue, just a delay tactic, etc. 

So now the bank is likely to file to have this removed from the bankruptcy, right.If not, what does the bank do to regain this asset from an obvious stall tactic?

This is guru BS type of tactic.

You can approach someone with a win win situation without having to resort to sly tactics, which will always come out in the wash sooner or later.

If I uncover a big deal that's beyond my personal financial capability, what are some specific, safe, legal, and minimal-cost tactics to use against the seller/owner to secure my deal while I investor/partner shop?

If your $$ in rehab has led to an over improved but beautiful and well built house that will result in many years of maintenance free ownership, I would consider using tactics like furnished room by room rentals on Airbnb (then converted to direct pay) to get maybe $3000/mo or more from your rental. ($600-700/mo per room plus utilities).