I have never seen such a thing with feminized seeds and I hate to say it, but I'm worried for you because I've seen this with regular seeds. hellmutt is right though, those could be calyxes forming. Let em go at least another week. Keep an eye out for a white hair growing out of the tip of those things, then it should be female. If they start to separate from the stalk a bit and droop down they're definitely male. Even if they don't separate and just start to point downward.
If you do have to remove the male, be extremely careful not to shake it or manhandle it too much. Or walk away with it. Have a plastic bag or container very close and slowly put the male directly into it. Cut it off a piece a a time if that helps you not ruffle it. If you pull it away from the rest of your plants too fast, the air flow is going to send all that pollen back into your plants. It hopefully won't get that far before you know for sure. Still be careful and slow when removing it.
I had a male go just a little too long (similar situation as yours actually) and when I pulled it out of my grow cabinet some pollen must have gotten left behind because some of my buds had seeds. Not a lot - a few here and there. But my subsequent grows afterwards even had seeds which means that the pollen sticks to walls and stuff. I cleaned my grow cabinet really well so I don't understand how they could survive my cleaning but they did.