A Manager is only as good as his subordinates..and vice versa. Going over your Boss's head by approaching Human Resources, would maybe denote that your Boss is incapable of dealing with/ or ambivalent about the issues you raised with them.

But this doesn't have to be a big deal...simply have a sit down with your Boss and apologise for putting him in a difficult situation, and that you in no way wanted to insinuate that he was anything but a stellar Boss.