Hey everybody, this problem has come up before. Can you pick up your weapon if it's in an opponents square? What if you have enough ranks in tumble to tumble through the enemies square? What if you fail the tumble check but don't mind taking the attack of opportunity? What if the enemy puts their foot down on the weapon? Is putting your foot on something a free action? 
I had about a 20-30 minute argument with the other guy the last time this came up. The difference is this time I'll be the DM. That actually makes things trickery though because I don't want him to think I'm being unfair. I'd like to be able to give good justification for what I rule and explain how it works.
If you're wondering, this will probably come up when his rapier wielding rogue faces the Githzersia spiked chain wielding fighter/rogue NPC I just built. If I'm not mistaken a succesful disarm puts your weapon at your opponents feet. Any suggestions on how to resolve this would be much appreciated.

I had about a 20-30 minute argument with the other guy the last time this came up. The difference is this time I'll be the DM. That actually makes things trickery though because I don't want him to think I'm being unfair. I'd like to be able to give good justification for what I rule and explain how it works.
If you're wondering, this will probably come up when his rapier wielding rogue faces the Githzersia spiked chain wielding fighter/rogue NPC I just built. If I'm not mistaken a succesful disarm puts your weapon at your opponents feet. Any suggestions on how to resolve this would be much appreciated.