Thanks for your reply Tod, although I'd disagree this is a common requirement at Immigration offices around the Country and as other have testified to in this thread.
So may I pose another question.
The OP has received advice to apply for a 30-day extension, then a further 60 day extension to visit Thai spouse, which gives him the 2 months grace period of marriage.
The 60-day extension requires proof of relation, i,e, Marriage and registration certificates.
Are they likely to refuse on the same basis that they haven't been married two months, and if not, why not?
Don't both request the same proof of relationship.
The answer could determine which way the OP procedures and rather than waste time at CW, he could go straight to a local Thai Embassy to obtain the Non O, who would not question the length of his marriage and base it on the legitimacy of the marriage.