Hmm....I was having a problem with a rogue last weekend who I could not break out of stealth. I was using consecrate repeatedly, but this rogue was able to sap anyone of my group at will. I assumed that the changes in patch 1.11 that no longer broke stealth unless you actually saw the rogue with certain AE attacks/spells was causing this. I dropped quite a few fire nova followed by magma totems, but I still never broke his stealth.

I guess I just didn't keep consecrate and/or magma's up with no break in coverage which allowed him to sap me repeatedly. I'll setup a magma only key instead of my castsequence and see if I have any better luck breaking stealth.