主句 Here hobbled a bitterly disillusioned cripple是一个倒装句 主语是 a bitterly disillusioned cripple 谓语是hobbled 这种倒装和“Here comes a car”是一样的
a man 是主句主语a bitterly disillusioned cripple的同位语
who引导定语从句修饰 a man
在这个定语从句中
关系代词who代替a man在从句中做主语 held on to 做谓语
his sanity and his wife and his home and his job做宾语
because of 14 miserable steps 做原因状语
leading up to the back door 现在分词作定语修饰14 miserable steps
from his garage介宾结构做后置定语也修饰14 miserable steps