if you have some friends or family with some older kids...say around eight or so, ask them would they mind being your guinea pig, sweets do the trick, ask them to play quietly, with a ball or what ever and totally ignore your cocker, you will find after a while he will go to them, slowly he will begin to approach kids (gently and slowly works), my friend was successfull this way, with a dog much the same as you describe, i have never had this problem personally as i have four kids mixed ages, and elmo was thrown in at the deep end, and survived, so to speak. ignoring the problem is sometimes better than cuddles and sweetness and light in his ears, the more you cuddle and pamper them, when they react like that, the more likely they are to think there really is a problem. hope things go well for you. :wink:
bunny and elmo
xx woof woof