I agee the tow truck driver was an idiot. At a minimum I would file a written complaint with the towing company. At the maximum I'd be looking for them to kick in for damages. There was still some oil in it when you drove those few hundred yards. It was dry when he started it up. If there is damage to the engine, it was more likely to have occurred when he drove it than when you drove it. If there is damage to the engine, you should hope it is seized. That will be conclusive evidence they caused the damage since it started for them.

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1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13