[ActionMaxon]

Not sure about sourcing spring clamps, but for getting out the PCV (that's not a PCV valve, its an open elbow fresh air intake for the PCV system. Symantics.), take a small right angle pick and carefully insert and run it around circumference of the valve between valve and intake to unstick the silicone.

Should come out with some twisting after that. I use that trick for coolant hoses too when they don't wanna pop.

If you can't find the spring clamps, and don't want to chew up the intake with a normal hose clamp, pick up some lined clamps.

Good luck!