I've taken a short break from DNMs and now I want to get back into it, but my main concern is that SharedCoin, my main tumbling method, is flawed and can be traced. What are the consequences of being a now-former user of SC? Can I be linked to my DNM wallet?
Yeah, they probably can. As long as you weren't buying large amounts then I doubt anything will come of it though.
Third party tumbling was practically unheard of with SR1, and yet very few, if any, buyers were busted when it went down.