If the SJP was apart when it was installed, it might cause a vacuum leak which I would think would have set a lean mixture code. It certainly would have caused a problem with the vacuum assisted brakes. I'm sure you would have noticed that. My guess is that the vacuum would tend to hold it together.
I don't think it would have caused any real damage, if that's what you're asking.
Glad you got it fixed.
2001 530i/5 S+P CDV delete/Akebono ceramic pads
M5 SSK/RedLine MTL/M5 rear sway bar/Bilstein HD
BMWCCA Member #337964