Regardless of your own personal opinions, if you engage in acts that cause your husband to ejaculate outside of you, then that is point blank masturbation. It is nothing else. And masturbation is ALWAYS GRAVELY SINFUL. It doesn't matter if your ovaries are there are not, it doesn't matter if your uterus is there or not, it doesn't matter if your husband had a vasectomy. Masturbation is masturbation. Some people don't like to hear that the Church is making calls on what can or cannot be done in the privacy of their own bedroom, but I for one am quite happy that She is looking out for our souls. It's one less thing for me to worry and wonder about.