BAD Manager - HELP!!!

[litlbear1072]

I hope this isn't too confusing but here is my situation and I need help!!!

A few months ago I started a job in a completely different industry. I accepted the position because it sounded interesting but also because I ADORED the woman who interviewed me. Unfortunately, for reasons I'm still not completely clear on, she was let go 3 weeks after I started. Anyway, a new Sales Manager was finally hired and started in December. It's a very small office (3 people - Sales Manager, AE, and Admin. Asst.) His very first day here he came in, didn't ask a single question about the AE and myself (I'm the Admin. Asst.) and what our jobs entail. He, instead, looked at our sales boards and told us that we were doing it wrong (we were following the instructions of our General Manager. He also told the AE everything he can't stand in a person, which happened to be exactly what our AE is like. Our AE is well liked and trusted by ALL of our customers and well respected within the industry. This manager hasn't stepped up to the plate at all since he started except when we finally snap and vent to our General Manager and then she gets on his case. On top of all this he's just DUMB!!! He was cutting some board for a presentation and didn't even know what side of an exacto-knife was the blade!!! HELLO!!! The AE and I are desperate to get this guy out of here because we don't trust him. His actual response when the AE (we'll call her Sandy) confronted him on something was "Whatever Sandy," and then stormed off in to his office and called the General Manager. Does anyone have any advice on how to deal with a person like this???