I don't know about the Pica - I have the GP, but the instructions say the struts are for display only. They do not even stay on in flight (OK I admit it - I didn't read the manual before I flew her). I have made several flights, and have pushed the envelope many times with high speed rolls, loops, high G banks, etc and have not had the wing fold.

Do not misunderstand me, I do NOT know about the build of the Pica so I am NOT saying you can fly without your struts. Check your manual to be sure.