Post compression test engine is running rough, surging, poor power and shaking?

What is your question?

I had a compression test done to confirm the noted problem for 2008 Saab 9-3 with the 2.0t engine intake valves. Drove home with noted problems above. What would cause that? Damage to spark plugs from the mechanic doing the compression test? Incorrectly restored/reinstalled coil pack? Flashing Check Engine Light during hard acceleration. Drove it back to the shop that did the compression test to go ahead with the intake valve replacement job. Hoping they realize if they f***ed something up to cause it they own up to it. What are your thoughts?