Bummer man, so sorry to hear. But I do have some good news for you, ready....wait for it.....ok here goes: You are overreacting bro!!!
OK, so lets start with the cons. You have seeds in your bud that have to be picked before smoked. You might accidentally smoke a seed which WILL piss you off. Your weight will be SLIGHTLY less.
Now for the pros. Next year when your buddy harvests those beans outdoors, you will forget about every con on the previous list. Your plants were pollinated early on and only once. You still have great trich production which means potency should not be affected that much at all. This also means that taste should not change (unless you smoke a bean hehe). You can keep a few seeds for yourself and have a chance at discovering a cool phenotype within its genes. And last but not least, you are still getting BUD!!
Whatever you do, dont stop this grow. Let it go until you see at LEAST 50% amber trichs and I promise you it will get you PLENTY stoned. In nature, MJ gets pollinated many many times throughout the season which really slows bud production. Your plants were pollinated only once and probably not with that much pollen. Even plants outdoors eventually start working completely on bud production to shelter the seeds, it just takes longer. So in short, you should be fine my man. My mentor grew a crop when he was 18 and was to scared to go back and pull the males. We harvested the crop and found that over half the plants were male. The bud was almost more seed than bud but it was some of the best smoke Ive had since he let it go till the very end of the season.
No seeds would have been preferable, but man you really lucked out on this one since you caught it when you did. Just imagine if you thought your male was just some funky female and let it grow even longer. Let em finish fully, pick out every bean, save some for you and give the rest to your buddy. Next year (or this year if thats the plan), reap all the rewards and be glad this happened
KB