Player looks at another's cards

[Ragnar]

3-6 game at Casino Del Sol in Tucson. Seat 6 is a kind of goofy regular. Seat 7 is a very muscular nicely dressed guy about 15 years younger than seat 6. Seat 6 is the agressor in the early betting. The board after the turn is 7 8 7 8. Seat 6 bets. Seat 7 raises. After a few seconds Seat 6 reaches over and looks at his neighbor's cards which are protected by a chip.

The whole table is stunned. The dealer is an old school long time dealer. He said, "His hand is dead." Then he said, "Would you like me to call the floor." The seven seat says no, and something to the offender like, "You're lucky you picked the right guy to do that to. If you'd have done that to someone else, you'd be in trouble." By the way he later says that he would have popped the guy when he was younger.

The dealer waited until his down was over and discreetly told the floor. The floorman waited a bit and then went in the back and told the cardroom manager. I'd assume they watched the tape. About a half hour later security took the six seat out. I don't know how long they banned him for. I'll probably find out within the next few days.

What do you think the seven seat should have done? Frankly I thought he handled it very well. Should the dealer have called the floor immediately? How long should the casino ban the six seat?