Those red brandlings are worthy of preservation. If you put a suitable layer of wet hay or similar,into which they can migrate, they can be transferred to another bin. Never spread compost containing them, if they are still present, the compost is not 'done' and needs longer(and/ or turning!). They serve no purpose in your beds; they do not 'grow -up' to be earthworms! The more you have in the compost bin, the quicker its done.