Biting is not tolerated!

oh my quite the weekend here. My hubby is away on a golf trip with his brothers, they started doing it a few years ago and it has been really good for them so I have no problem with them doing a weekend every year.

My problem comes when my children decide to become possessed with the devil and be a total freaking disaster while I am on my own. Seriously.

It all started out so well Friday bedtime went off with no problems (they were beat from school and activities). Saturday, little angels ate their breakfast, helped with laundry and dishes, we went to the girl's first dance class EVER and we had excellent behaviour and even when we went to the dance store after to acquire some tap shoes things were going so good. A quick stop for lunch at nonnas, then we were off to the dollar store for a few things and a toy each because of such good behaviour, then finally the grocery store where they were again so delightful and helpful I was so proud.

Cut to getting home and all hell breaks lose, the portal to hell(apparently my living room) open up and there was fighting, kicking, screaming, no sharing, and then it happened, while I was hiding away in the boys room putting away laundry I heard it...something like a struggle, some grunting some pushing and then the great cry rang out through the house. I ignored it for a minute but then it got louder and had a more "hurt" tone to it.

What is going on here? I say innocently figuring the girl just got a misplaced hand to the eye.
He said, The girl took my dollor store toy and wouldn't give it back.
I said, so what did you do?
He said, I bit her.
I said, Mr. Full Name of child, THAT IS WRONG! Go sit on the stairs until I tell you to move.

I check out the girl and the welt on her back is already rising. I grab some ice and give her some loving. I look at him and tell him I just don't know what to say.

He starts to cry that she took the toy and wouldn\t give it back.

NOTE: I have them on a sitcker chart for things like cleaning up, being polite, sharing, brushing their teeth, etc.

I confirmed that the girl did infact take the toy, thus explaining why I had heard naa, naa, naa, naa, naa shortly before the crying and screaming.

The end result:

Biting is not tolerated it is violent and it hurts people, sometimes bad enough that they have to go to the doctor ( the boy understands doctors). Taking toys away is not tolerated, this hurst peoples feeling and is not how we act.

The punishment:

No sharing sitcker, how hurray sticker for having a great day, no cookies at dinner time and you have to tell your nonna and nonno why you may not have any cookies at dinner time (we were going there for dinner). No wii and no t.v. tonight after dinner.

Swift and memorable. Did not want them to worry all weekend until their dad came home. But they will have to tell dad about the absence of stickers on their Saturday line on the chart.

Over all I'd say I handled it well. I really did not know what to do. I was so shocked.

What have you done. In this situation??