I could actually see him meaning this as a joke, but it wasn't a funny one. I see him more as somebody who talks out his ass than as somebody who threatens. I can think of somebody/something else to compare that to (somebody you all love), but I wouldn't want to be accused of making excuses for him.
Besides, you know what people on your side constantly do? When it's pointed out that somebody on their side did something wrong, the comeback is "Well, your side did it." I guess the posts of most conservatives are meaningless.