has he piped at least his sack yet? if he has i would pull him out get some thread and tie a knot around the yolk this should cut off the blood flow from him into the yolk and cut offthe extra yolk ( if there is alot of blood coming out do another knot but tighter) he may still bleed a little but thats ok) put him in a tub with the others that are out just make sure its really wet in there for him and he will be fine