Hi Jack,
I don't think it has anything to do with a "huge spiritual ego", as you put it. My experience has been that it is a process whereby you become more introspective - not necessarily withdrawn, but more comfortable in "the silence", as it were, and not so apt to fall into "normal" conversations... however, with that said, one thing that I have noticed in my practice is that socially I am far more at ease than I used to be a number of years ago, as I find that I am now far more spontaneous in my interactions with others... the old adage of "think before you speak" has been turned upside down for me in that I find I am able to have a conversation with someone (or not) from a place where everything is "okay". However, as you mention that it is a concern with your relationship... well, I am finding the same thing. It is a concern, but only from the point of view of what I can only term my "old life" and my old way of communicating with my spouse, which was often tainted for some reason with fear, or one of the other not-so-healthy emotions. Now, for the most part, I communicate from a totally different space... in fact, I think that is a very good word to use, as I find that communicating from that calm "space" (whether you're "spaced out" or not...) really seems to be the ground of where I find myself right now.