put back on EASILY... not so much. Make sure any brackets that hold the tube near the plenum have the bolt removed from the bracket so the tube can "bend" away from the plenum as far as possible when you pull it outward to insert the valve cover.
I removed my EGR stuff so can't check my own car, but I believe there was a bracket near the back corner of pass. side plenum that I removed the bolt to if I recall. I think it was also almost impossible to put the bolt back in the bracket so it simply dangled from the tube after the valve cover replacement.