Hello all,
I am the guy playing the cleric in this game, and I wanted to give you my opinion. It was a little over 1k gold, who cares. I am sure that we have missed secret doors with treasure chests behind them that are worth more. We are 12th lvl and three of the members of our party have access to make whole and mending. Radu could go around sundering all day and night for all I care, I am willing to dump two or three of my 2nd level spell slots to fix the items. It will all work out. Hell, if you want we can just dedicate my bag of holding to collecting the broken pieces of weapons and armor and I will fix them in down time. This issue has several simple solutions, as was mentioned in this thread.
The problem is with the individual who, upon hearing that you had sundered a +1 weapon, suggested that you had intercourse with pigs. There have been problems with him and loot in the past. Like the end of the last adventure, when he got the spell book with EVERY wizard spell from the core, and that crazy robe, and when we suggested he sit out of the loot for a bit to let the rest of the party catch up he nearly stormed off.
Back to the point. If you had a spell that not only made the enemy take a -4 to attacks and do a d3, but made them not threaten squares, and have every attack draw an AoO, would you use it? Sunder away. Sunder everything, sunder their nose rings and hair ties.