[Precturge]

I saw this on another website I'm on...

Here's the OP:

As some of you know I've been working with our family dog dog several months. We've gotten to the point where he's saintly with me- well behaved with the cats, other dogs, and kids (even my stupid 2 year old sister who hits him whenever she can.) He's been nothing but an angel for me for the past few months.

Last night, I got up to walk past him to get into the kitchen. I've walked past him in that spot hundreds of times before. Wasn't paying attention to him, but I realized he was acting funny. Like his body was frozen and he was just staring at me. Next thing I know, he's jumping up and attacking me.

No snarling or growling or warning of any kind except for that weird stare and frozen posture (not a threatening stance, just.... completely still) He managed to get my hand and ripped some of the skin off of two fingers and bruised my knuckles and thumb.
There's a definite difference between when he used to play-bite and this. This was him being flat out aggressive and wanting to hurt me.

So. We're taking him to the vet next week to see if we can possibly figure out what's going on. This isn't the first time he's bitten someone, but it's the first time he's bitten aggressively without any kind of provocation.

First thing I thought of was rage syndrome, but I've always heard that it's not a real disorder. Anyway, once we get him to the vet and get him looked at we've got to start weighing our options.

In all honesty I want to put him down. He's a liability to us. He's bitten me, my dad, the 2 year old, my ex boyfriend's mother and my brother's ex girlfriend (we chalked the ex's mom up to dogs' ability to sense evil XD)

My mom wants to put him in obedience training, as if that would do anything. He's perfectly obedient already, he has behavioral issues. I know she won't be willing to work with him, especially once I move out. He's her dog and she refuses to have anything to do with him.
My dad wants to give him to the shelter. In our local shelter, he's just going to be put down and we all know it. And I don't know if I feel right giving a dog with known aggression issues to someone else to deal with.


So what would you do in my place?
TL,DR? Rage syndrome: true or false?

Plus the dog also did this:

Yeah... it's the end of the road for Pork, five minutes ago he attacked my sister (2) and bit her face several times.

And this is what some idiot is telling her!!!

you put the dog down and its your fault and you lose. i cant belvie how many people are justsaying put the dog down. i recently saved a litter of puppies from being put down. i think you should try all your options before giving up and just saying put the dog down. muzzle the dog, put the dog in a room by its self, try the obidence school, take him to mulitple vets and get differnt opinions. i dont feel sorry for everyone who got bite, i feel sorry for the dog and i dont care what any of you heartless people say.

why would she pay 20k on another animal? it is her dutie to take care of the one she has. that money does not dersve to be for another animal. it is the dog she has now money.

But there are SEVERAL other people telling her to put the dog down, me being one of them.

Keep in mind this dog isn't an APBT, it's a Poodle mix.

What your guy's opinions on this?