Apparently Paul McCartney tries to talk to John Lennon when writing new songs. Which is more than he tried to do when John Lennon was alive, so that's the healing started, then.
"If I'm at a point where I go, 'I'm not sure about this,' I'll throw it across the room to John," he says. "He'll say, 'You can't go there, man.' And I'll say, 'You're quite right. How about this?' 'Yeah, that's better.' We'll have a conversation. I don't want to lose that."It's possibly true. You could imagine a ghostly Lennon nodding earnestly as Paul showed him, say, Dance Around, encouraging Macca to rush down to the studio and record the thing.
And then turning and laughing his spectral heart out at persuading Paul to chip further away at his reputation by pumping out more subpar twaddle.
On the other hand, maybe McCartney's head his post-1980 output, and is simply trying to blame Lennon for making him do it.