If the notion is that the staff of Sturgis conspired against SJL in concert with the staff of the PoW, AL, the owner of 123SR and the owner of the garage, and that up to 3 Sturgis cars were involved, that's an astonishing bit of sleuthing.
I wonder if MG's sandwiches were ever accounted for? The police should have taken stool samples from everyone next day to check what they really ate for lunch that Monday.
Actually, maybe blood and seven samples too. If the boys were a bit busy for this, they could have just handed over their underpants.