Thanks all for your advice and research, I really appreciate it! The interesting thing is when we had our Embassy appointment for my husband's six month visa to enter the states the woman asked if we were certain we were moving back within that time and I said yes,
definitely, because there was absolutely no doubt at the time, we had planned to move back a couple of months later after that initial visit over. Then job considerations took hold on both sides (UK & US). Now thinking back I know why she asked because it was due to expire
right before our 2nd anniversary...i.e. - if our appointment would have been a couple of weeks later the visa to enter would have expired safely after our 2nd anniversary of marriage and this wouldn't be a problem now.
The bottom line....you try to plan things exactly right as you know at the time and then things can change so quickly! If we have to go through the entire process all over again, then that is what we will have to do. Ironically its not really the extra expense that's the issue (although we could certainly do without), its truly the stress of it all.
I will inquire about it and post my findings in case anyone else is ever in a similar situation.