Cut it as close as possible to the base. It will try to come back but the yellow polyps will cure that. I always find gluing softies rather hit and miss, you can try it but it's alot easier to let them attach themselves. Either wedge it in a safe place or fill a shallow plastic food grade container with rubble pieces and sit it in there. You'll need to cover it loosely with veil material. If you have a HOB
breeder box, I find that to be the easiest and least amount of fuss.