who knows...Jimmy only stayed with the reformed Small Faces for a month. Paul knew it wasn't going to last and what do you know? He was right. I also think another reason Jimmy left Wings is because of Linda's pregnancy. The thing that Jimmy liked best was to be out on the road, touring, giving back to the fans and when Linda became pregnant well...there went the '77 tour. I wouldn't be surprised if Jimmy was a little ticked off about that. Also about the way he was treated like a sideman by Paul. The following is from the book "Band on the Run: A history of Paul McCartney and Wings"
Shortly after, McCulloch left Wings to join the reformed Small Faces. He publicly said that he was disappointed Wings hadn't evolved into a total band. "I'm sure (Paul) knows, and everyone knows that it can never be. As a touring band, it'll never be like other bands where you see the other members when you're not working. With Wings, it's get the work done and get home."
"I left amicably," McCulloch later said. "I don't think anybody was too upset about the parting. We had some very good times together. Though Linda doesn't know much about music, she's really a nice chick. And I certainly learned a lot over the past two years."
When Paul was asked about Jimmy McCulloch's exit, he replied, "It was just one of those things. When you think about it, it's really difficult to set up someting like a stable gruop, because in my position you get all sort of weird little problems that you can't do much about. Say I decided to do it one way and a guitar player wants to do it another way. It becomes very difficult then, unless he comes up to me and tells me, "Look , I wanna do it this way."
"What was happening was that tension was just building up a bit and we didn't really feel like we (were) quite fitting. It was just getting to the point where we were either gonna do another album that was going to be hard to do and keep on arguing, or else we were just gonna decide that we don't need all that stuff and get on with the music. That's exactly what happened. Jimmy decided to leave...luckily he'd done all the required stuff on the album that we wanted him to do, so it worked out quite well for us."
here's what Paul said about Jimmy's exit in the Wingspan book.
Jimmy stayed (with Wings) for awhile but then I was rung up one morning by Steve Marriot, who used to be in the Small Faces and Humble Pie. A good singer, and he'd been a friend of mine. And he just said, "Oh hi, mate. Er, me and Jimmy have been up all night and he's decided he wants to leave your group and join mine. I was a little bit put out but, well - what can you say to that? So I just said, "Hey good luck to you guys, I hope it works out," knowing in my mind that it wouldn't that they'd been all night and had a great time but that this was not going to be a lasting thing.
Jim came on the phone and I said, "Look, thanks a lot. See you around." It didn't last...and, actually, Jimmy didn't last much longer himself. He died soon afterwards, of an overdose I think. He was always a little dangerous. As an older guy I did try and warn him a few times, like "What's going to happen when you're thirty? You've got your whole life ahead of you." But he liked partying too much and was getting into too many things. In the end, he was just too dangerous for his own good.