Yeah he threw it, but the party was to celebrate the fact Sabretooth became the "secret assassin lord of the entire eastern hemisphere" and that's why all the villians showed up.

Sabretooth: "look at them. Any one of them would kill me at the drop of a hat. That's the only reason they're here. To size me up, looking for an opening"
Mystique: "Welcome to the top, my dear. Best get used to everyone you meet wanting to kill you."