I know you mean well so this is more of an observation. if you have seriously suffering(Exhaustion/Hypthermia etc) member of a group(any where any time) then by all means support, assist, give food, take rucsac off them(This has been done to me and I've done it for others), give clothing but NEVER drag or FORCE them on to the next CP, Seek shelter ASAP get them warm and feed them. if possible drop off the hill to a road for help. Remember though you are the most important person so you don't want to add to the casuality list, you can't help them or yourself if you succomb. Thats where Mountain Craft and experience come in.
Forcing some one to walk who is suffering from exhaustion will only take away their last reserves of energy and could make matters much worse.
It's a fine line but worth considering.