When Goren and Eames arrest Doctor Kelmer it can be seen when they turn him around that Eames only put the cuffs on one of his wrists, the other cuff can be seen hanging off to the side. A very common mistake in the Law & Order franchise.
If, in fact, the torso was found in Cape May, it would not be examined by the Ocean County ME. Cape May is located in Cape May County, not Ocean County, which is nearly an hour and a half away by car.