It's quite disappointing that INIS and Fitzgerald have resorted to these sort of dirty measures of systematic stalling. Quite clearly they are now operating much similarly to the UK Home Office.
I applied for an EU accompany visa in Sept 15 and had set an initial deadline of January 16. Sure enough we didn't get the visa, the judicial review and lawyer route didn't work because of this Test case scenario and writing to them yielded no results.
Ended up pulling out our documents and applied for a Schengen at the end of Feb. Got our docs a week later and applied for the Schengen visa at our local French Embassy in Harare Zimbabwe. Visa was issued within 3 working days although that was probably because I applied as a tourist. Now we are in France and we have kickstarted our Surrinder Singh to the UK

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That would be my advice for anyone thinking of applying to Ireland for Surrinder Singh. APPLY AS A TOURIST. Don't mention anything about treaty rights and once you get to Ireland well the process is quite straightforward. Sure you will have to show more financial requirements and prob have to book Itenaries and hotels, but I think if you are serious about SS that should not be an issue. Otherwise Plan B is Schengen to mainland EU.