I don't get it. Why would you be in trouble for not waiving your rights to see the recs after matriculation? Why would anyone punish you for that? Who would do that? Now you got me worried but I didn't waive any of my rights.
There is one thing for sure - your recommender can know whether you chose to waive or not in his/her email from the university. So you can think on your recommender's feet what they would think if they knew you did not waive your right to see your recommendation....