Now, I know there's a long history of burial at sea, but there's a differnece there. I'm sure those coffins are weighted so that they sink to the bottom of the ocean. This way, no one stumbles across a floating cadaver raft. At the bottom of the ocean you can almost guarentee that the thing will never be disturbed and lends some credence to the whole 'rest in peace' at least when it comes to the physical remains. To just shoot the damn thing into space where anyone can run across it seems very disrespectful. They should at least hurl the thing into a sun or something. Also, haven't they considered the hygiene issues of firing cadavers willy nilly? Who knows what could happen if mr corpsy pop slammed into something like a space station and unleashed some disease or the cultural contamination that could occur if certain aliens found it.
It's wrong to jettison corpses.