Pacers fans have had enough of their well behaved team this season.

Only 1 arrest? We will not stand for this, man!

So this pro-active fan took matters into his own hands and rushed the court last night during Indiana's game vs. Washington. He successfully penetrated the lane and went in for the dunk like most opponents have all season ... but then he tried it another time. Jeff Foster would have none of this. Three times the size of the fan, he went for the manly leg sweep.

Jermaine O'Neal was impressed ... with the fan.

"I was like, 'Please, do not let this guy hit me.' I don't want to be in anymore situations with fans," O'Neal said. "I didn't want to have to protect myself by having to do something. It was a very strange situation for him to be out there and acting real strange. I wanted to keep my eye on him. Security did a good job getting him to the floor."

"We could use his foot speed on the team."

Fan disrupts game with some goofy floor antics [Indy Star]