What climate do you live in? It's Winter so this may be a problem with the CCV causing blow-by to go through valve cover gasket. Have you changed the CCV system before?
The towel wrapped around the fan connector is just there to see if it sprayed oil again.judging from how much it sprayed and since I still have a full pan of oil, oil pressure wise the only thing I can think of is that maybe the vanos unit itself is cracked. I really have no other clue since it worked fine with the new solenoid for like 4 days and then everything is horrible again.
No, the leak cannot get to the washer bottle.Check your oil pressure switch's. I've seen them leak on E30's and push oil through the wiring harnesses. Just a thought.