Well, they are saying its a PSN issue, which I don't think is correct. I think they are just too lazy to implement it on the PS3 side of things.
Resistance patch 1.50 added this, so Black Ops should be no different. Shame on you Treyarch.
They said they would try see if it is possible via TU, but I'm sure they are just saying that so we get off their case.