Hi Jane - Thanx for your message but alas I think you are now gridlocked! This usually means one or more answers will have to be replaced.
Regarding ??NGOD how can you guarantee these letters, as there wouldn't normally be four adjacent interconnecting clues? If these letters are bullet-proof then 'SUNGOD' is all that would fit and in my opinion the clue is naff. ?LNGOD is obviously a non-runner which then puts OXTAIL in question, although I can't think of a better alternative
More accurate than SUNGOD would have been TIN GOD (3,3) which Chambers defines as 'a self-important dictatorial person' BUT it is not a 6 letter word. Shame!
I can't think of an answer to ?L?X? A?D ?A?N? so once again you may have to change OXTAIL unless any other letters can be altered.
Anyone else reading this post is invited to save a damsel in distress (while you prepare tonight's barbie)!
Regardz, ja