When tow truck drivers engage in abusive, predatory, tricky practices to snatch vehicles, that would be a "tow jack" or "tow jacking."
Watch out for that guy in the tow truck sitting at the end of the lot. If you leave the restaurant and walk across the street to mail a letter, he will tow jack you out of the parking lot the minute your foot steps outside the building.
Flipping property in a neighborhood not merely for the purpose of profit, but with a priority of improving the neighborhood.
One who does this would be a "benevolent flipper."
Some slumlord offered John $20k for his house, but he sold it to the city for $17k so it would be a rainwater garden instead of yet another North Minneapolis crack house. It's called "benevolent flipping."
Source: This phrase was used by a guy interviewed on NPR, All Things Considered, in early August, 2008, to describe what he does.