What is so special about a juror that one should be ashamed for verbally criticizing them? They are not royalty, they do not have honorable in front of their names. They are ordinary people who clearly made a very unpopular decision which is rightly open to scrutiny. The fact that a couple of them have come out and said they felt physically sick at their choice and that they felt she was guilty is enough to make anybody who seeks justice upset!
Also, I expect the jury to say things like that when being threatened physically.