Oh right, had forgotten to address the original question myself. >_>
I personally try to heal through, or Bubble and cleanse away. They're just impossible to deal with by yourself really. If you have one of the latest versions of Decursive though, it'll play a sound if your target has UA.
However, I thought the Cleanse was random so you actually had a chance to dispel a DoT rather than UA. Never actually tried it cause it's often just too risky, best to just heal through whenever possible.