base on balls

[twhidd]

This little league ball and this is only my second season umpiring. This did not occur in a game I was officiating, but I was asked by a friend what the ruling should be in this situation. As it occurred in his sons game. He also told me later that after the boy took his base on balls, he immediately stepped off base into foul territory. Then he bent down to tie his shoe. And was tagged and called out. I could not find any specific mention in the rule book for this case, unless I'm overlooking something.