I'm surprised a few gentle taps of the camera body won't release the shutter blades. You might also try gently tapping it against a hard surface, such as a table (remember, tap it gently, no need to pretend it's a hammer). This could release the shutter blades. I have a Pen EE-S with a similar problem, but the shutter blades stick open for only a few moments. Either way, your camera sounds like it could definitely benefit from a CLA, even if the blades close again. On vintage camera equipment, I don't really think that just buying another will solve the problem (unless the new camera was recently serviced). Why? Because the new camera will likely develop the same issues. If you like the camera, I'd say get it repaired. Heck, a CLA for the Pen EE is only about $50-$60. However, only do this if you like the camera and plan on keeping it. You'll likely never earn back your investment in the camera after it is CLA'd, so just be sure you'll actually use it.