I agree with Vespertine. Mr. intuition had some difficulty the first time out. Luckily we were with another couple who had enough experience to be relaxed about the whole thing. Apparently he (other couple's husband) had the same problem himself. We'd taken a long break after that first experience, and then only soft swing thereafter. Turns out for us the problem was just his concern that this was really ok with me; he didn't want me to be hurt by his being with another woman (initially was a big problem when we first started out). After he was (not just reassured, but) encouraged to go ahead and have fun, problem solved. His advice to other couples' husbands who experience the same 'stage fright' is to just "relax and be horny."
SnozzberryBlu, it sounds to me like Mr. Snozz's problem arises from some lack of self-esteem, or some level of insecurity about his sexual equipment or prowess. As was suggested, this often goes away on it's own, but he needs to feel some success I think. Go for low pressure situations, and if you're comfortable maybe give separate rooms a try (we have and we find that it cuts down on the level of overstimulation which is often a problem). Maybe see if fewer people (3some) might help. And this might seem a little radical, but maybe even consider allowing him a 'separate date' situation. Still perfectly ok, but may seem less like actual swinging and more like simple sex-with-a-stranger. I'm just brainstorming here, so some of these may not be good suggestions for you. Hope it works out for you guys!