IMO, the flavor text for furious smash is poorly though out.
Whereas I don't have an issue with it - I'm on record numerous times here as saying that I have no problem with flavour being rewritten without changing mechanics.
As an example from a game I'm in - playing a ranger, adjacent to two enemies. I used the Twin Strike power... and described it as attacking one opponent with my axe, while using my sword to parry a lunge from the other, guiding his weapon so that he over-extended and stabbed his friend.
Mechanically? I made an attack roll with my axe, and an attack roll with my sword, and dealt axe damage and sword damage to the opponent. Does it matter that when we filmed the scene, it was the second opponent's knife that caused the wound, even though I used the stats of my sword to resolve the mechanics?
So if the Warlord is using a flaming sword, I don't care if he says "I smack him with my shield", or "I drive my shoulder into his gut" - he makes his attack roll and deals damage just as if he'd hit the guy with the sword. Because otherwise, as a DM, I discourage players from saying "Regdar parries the orc's axe with his blade, and the weapon bites deep into the sod, causing the wielder to overbalance; Regdar takes the opportunity to smash a heavy boot into its face." If I say "Well, that's an unarmed strike, so no proficiency bonus, and you deal 1d4 damage", the player's going to think "Well, that was a waste of an action," and next round he'll say "I hit him with my sword." But if I say "Cool! Roll longsword," then the player knows that his attack and damage rolls aren't going to be penalised for cinematics that don't include "I hit him with my sword", and we'll have more exciting action scenes.
OTOH, with commander's strike, he's not actually attacking the enemy at all.
Like I say, I flavoured my sword attack as an opponent striking my target, with my assistance. I don't see why that flavour should invalidate my using the mechanics of my power.
Let me turn around this a bit... assuming that you are correct in the reading of the rule (and I fully admit that this is not really unlikely), do you like the way commander strike works or would you rather rewrite it so that it had an effect line?
I don't have a problem with it. I think it would work differently if it had an effect line, and I'd be fine with that too. I'd just interpret the mechanics differently, because the power would have different rules.
-Hyp.