The only reason he would have to toss the whole plant is if it has pollen sacs male or nanners, his is just pollinated in a very small spot, he needs to find the source of pollination and get rid of that, but the seeds can be cut out and the plant will be perfectdoes it have white hairs shooting out of it ? if no then serious caution advised. if you have an entire room full of plants in flower. don't chance it. get a large garbage bag and place it over the plant and tie it up so plant first into the bag and cut stem tie up. throw away asap . if its a single plant then just keep it in flower. if it herms then it herms. don't wait to long you don't want that herm juice in the room. it will re infect the next batch of plants months later . if it was me I have lots riding on them. I would toss it.