Ride question

OK I have more questions than answers. This mornings ride was really great. It started out with me lubing up. Inserting the helix. Getting into my recliner and laying back. My feet flat on the chair with my knees bent. This let's my toy move easily my knees are spread wide. I start my slow kegles routine. This kicks in the helix into auto mode. I just lay back and play with my nipples and enjoy the feelings from the movement. After about 20 minutes or so I feel my spinkter getting into the action. Then I will get the urge to have a supper hard contraction. That set me off into a spaz where all of my body contracts it lasted a long time 50 second or more. I try to relax but the more I try the harder my buttocks clamps down. My spinkter is going wild with movements. I feel the helix still moving around also. This went on until I stopped because my legs were weak. HaHa. I loved it. So question was this an anal orgasm? I never felt the ejaculation feelings. But I couldn't control my body either. Was amazing and intense at the same time. But not mode blowing or orgasmic. Thanks for feeding back. BTW I'm still shaking as I'm writing this.