Dissasembling Bosch Tassimo for Spare Parts | iNeedParts 

you need two flat head screwdrivers working from the back at the top where you notice a bigger gap wrk the screwdrivers around to one side until the side pops then work back around the other side until the pop, then work down to the bottom finaly turn it over and pop from the bottom the back and sides are one piece like a wrap around and should come off quite easily