I'm not claiming to be an expert by any means, but I have been having the same problem myself. I have quite a few plants on a continuous cycle, meaning I have plants at all stages of flower in the same tent. A couple of those plants started to hermie, and I went through and pulled off all the nanners. Some of them had already opened and spilled pollen, so fingers crossed I don't have my next 3 harvests full of seeds!
Did you notice if the nanners had opened yet or not? Because if they aren't fully formed you can pull them off CAREFULLY and dispose of them. I say carefully because they could open if you squish them too much.
Your plants are looking pretty damn close to being done, but it would be a shame to cut them before they are FULLY ready. That being said, you can harvest a week or two early and still have some damn good smoke; did that a week ago with some purple kush that was still about a week away from being done, but it turned out pretty damn stoney and still has a good taste.
Either way, I hope I've helped! Worse case scenario you will end up with a few underdeveloped seeds. Good Luck!
