issue not resolved
updated to new firmware, reset PS3 to output in 1080P, it still flickers if the SyncPlus app is active. I disabled the app last night and it started working. The wife just called me and said the TV is flickering again. I walked her through disabling 1080P on the PS3 again, and setting it to 1080i and its working.
I'm sorry, but issue is not resolved.