Hi lor,
Often the cp sz. control the motor area of our brain and what could have happened is the motor area of your brain was affects causing a bowel movement during the sz. If I may ask what area of your brain is causing sz. I also have cp sz. and mine are coming from the left hemisphere of the brain. My Epi told me that the cp sz. could also lead into tonic clonic sz. for me. He said the longer a person has cp sz. the higher the risk for tonic clonic sz. I hope and pray that this isn't what might be happening to you. you might want to call your neuro and report this. I wish you only the best of luck and May God Bless You!

Sue