I have a lvl 10 Titan and I have been using WOD whenever a big fight breaks out (middle flag in control) nova bombs havnt broken the shield and neither have fist of havok. Fist of havok makes the enemy jump INTO the shield and kill you and if I die the girls goes to. But if I'm in my shield and a warlock nova bombs it.....it don't break the shield (unless the warlock has vortex nova bomb that leaves a vortex behind that would kill me and if I die the shield disappears) I believe you are mistaken. The shield doesn't get destroyed it either ends by itself or the shield deployed dies.