I agree with wizofoz - and I wouldn't be surprised if MCC and the crew had a fair idea of what sort of failure had produced the symtoms.
Off topic slightly (and no implyed criticism); when I used to fly this route there actually weren't many airports between Moscow and Tbilisi that weren't NOTAMed unsuitable for various vague reasons. In fact sometimes the dispatcher issued an ETOPs OFP. Has this changed?