v. To pass a project or problem to another person or department without consulting with them or coordinating the transfer in any way.
2000
Craig Estep…says that the root of the CitationJet problem was "engineering would design the airplane and throw it over the wall to manufacturing who would take what they got" and move on to production—a classic failure.
1985
We had senior people from about 10 corporations in here, all suggesting ways to go," he says. "It was very unusual — they didn't know anything about computers — but extremely worthwhile. We didn't just want to create something in the lab and then throw it over the wall to the marketing guys and say, 'OK, now go sell it to business.' We got business involved in the design process.
1981 (earliest)
We need less of the grunt-and-grind applications systems which we've gotten so good at building," he said. However, "putting tools out there isn't enough," he added. "You can't just throw it over the wall and expect them to use it.
As the earliest citation shows, this phrase isn't even close to being new, but it's popping up all over in places where business buzzwords rule the verbal roost.