Not something we have had to deal with. We've been very careful to tailor our BDSM activities to my needs/desires and be sure that we aren't pushing past my safety nets emotionally or psychologically.
Reading that when we were researching BDSM was concerning to me as well.
I do GET the concept of pushing your boundaries-but I dont see the point in pushing them so fast that you can't handle it as you go along.
"Love As Thou Wilt"