I don't think the rule is stupid in theory, and if there weren't idiots running the NBA then it wouldn't be a problem. Brawls are bad, I agree with you there, and you need to have a consistent rule. Don't step off the bench.
But the rule becomes idiotic when it's interpreted horribly and inconsistently, as it was in this series. What annoys me is that the people who agree with the NBA keep saying that it's a hard and fast rule. No, it's not. If it were hard and fast Duncan and Bowen would have been suspended. The Kings players who went into the tunnel would have been suspended during the Christie/Fox fight. Exceptions have been made in the past, and the rule is completely open for interpretation -- AS IT SHOULD BE. There should be room to say, "Hey, you know, extraordinary circumstances, we'll let this one slide." Just like the "elbow to the head = automatic one game suspension" was relaxed for Baron Davis when he cheap-shotted Fisher. But for some reason now we're getting all letter-of-the-law on Phoenix?
The rule isn't stupid. The interpretation on the other hand, is stupid and inconsistent. The NBA should have said, "Hey, they weren't escalating the fight, they just took a few steps, we're going to let that slide." The next time someone steps off the bench and escalates a fight, suspend the heck out of them. How is that inconsistent?
It's the very definition of inconsistency.
The Tim Duncan situation has already been commented on by Bricklayer, so I won't go to deep into that. But if Duncan had been suspended, then it's even more consistent, and we don't have this argument about Stoudemire and Diaw, right? I doubt that.
Bottom line is that the rule wasn't written to apply to the Duncan situation. It was written to apply to the Stoudemire/Diaw situation. And had they kept themselves on the bench area, the way 5 other Phoenix Suns did, and 7 other San Antonio Spurs did - despite "human nature" - then they don't get suspended.
(And the Kings/Lakers brawl was completely different. The League decided that no one really knew what was going on in that case, and decided that the uncertainty of the situation made a clear distinction between it and any other situation the League had seen before. Besides that, the players didn't leave the immediate vicinity of their bench; the tunnel is considered part of their bench area.)
It's not like this is a shock, either. Before the League came out and said anything about a suspension, people were arguing that there should be no suspensions. This was anticipated before the League did it, because they have been so consistent in applying the rule for years.
Every suspension the NBA makes is a judgement call and open to interpretation -- they just happen to make ridiculously stupid judgement calls. This event has horribly damaged the NBA, and sooner or later they're going to have to figure out how to convince people it's all not pro wrestling. And the way to do that isn't by choosing to adhere to the letter of the rules, it's by using common sense and fairness.
The League has decided that this rule wasn't written to keep the game fair. It was written to keep the players safe. Had this rule been in effect 20 years ago and Rudy T. had jumped out on the floor and hadn't been hit by Kermit Washington but had been suspended, everyone would have screamed for fairness and common sense way back then. But it's not about what's fair and what's not. It's about keeping yourself away from the altercation, for your own safety and well-being. And the best way to do that is to set a precedent - which has been being set for for 10+ years now - by suspended every player found to be in violation of that rule, regardless of intent, human nature, or anything else.
This is not the first time this has happened, and I'd even venture to say that it's probably not the most egregious case of "common sense and fairness" being dismissed for the sake of consistency. (Remember that Reggie Miller was suspended for leaving the bench during the Detroit brawl, and that was a lot more serious than Robert Horry hip-checking Steve Nash into the scorer's table.) But because it's the playoffs and it's "the Spurs beating up on Steve Nash and the Suns," as Dan Patrick and Dan "The Duke" Davis complained all morning long, we're up in arms about it.
Like I said, I think it's a shame, but it starts with Stoudemire and Diaw keeping themselves out of the altercation. Then it's not even an issue. Just don't leave the bench, under any circumstances. And if you do, don't hope for fairness and common sense, because you ain't gonna get it. No one else ever has.