Yeah, BMWs nomenclature (at least in English) is confusing.
What normal mortals call traction control BMW calls DSC - dynamic stability control. What we would call partially activated traction control - enough for fun or to get out of ice - they call DTC - dynamic traction control. So, in turning on DTC you turn DSC off. Then, if you want to drive without any electronic assistance, you can press and hold that same button for 5 seconds, and then you're on your own.