I believe there was a period of time when we had LMA at center, and ran a double-team at Lopez... so the 18/10 isn't exactly all Joel's fault.
You're exactly right. Lopez also had a tip in over Martel (Martel mistimed his jump) and there were several times where Oden or Pryz would come over to help on a drive to the rim, the shot was missed and Lopez was right there for an easy put back. It wasn't that Lopez was flat out abusing Greg or Pryz, although he did do damage against those guys too.