Yea I brought up Steve Irwin as a reference of someone very experienced that was injured (and unfortunately killed) by something that should never have happened. His cameraman boxed the ray in, the ray couldnt back up so it felt cornered. My reference was that no matter what you still have to remember you are dealing with a wild animal here and accidents do happen when instinct takes over. Could be as simple as applying too much pressure somewhere or rubbing a portion of your glove over the ray's eye, my point was simply that freak accidents do happen, and if you can avoid exposing yourself to something like this it is far less likely to. Chance was pretty low it got Steve Irwin in the heart, just like it could be really low that your tame leo swings at you with its tail and nicks a main artery or vein, but the chance is still there so if you can let it be, let it be. In the case the OP doesn't feel he can, and with his stock I tend to agree that removal may be warranted in this situation, but the more you stick your hands near a ray the more you expose yourself, even if the ray is tame, or even if you know what you are doing just like Steve Irwin.