Well - have you read the NILIF principles? Those will help. There is a sticky somewhere -
http://www.dogforums.com/3-dog-train...life-free.html (NILIF (nothing in life is free))
There you go.
OK - I think you know what everyone is going to say. You just have to start from scratch again, and it will take longer this time because you gave in
But what you can also do is this. Make his bed a great place for him to be. Always give him his bones and toys in his bed. During the day, spend some time sitting with him and petting him when he is in his bed. If you ever see that he went and lay down in his bed without being told, give him treats and attention. Get him a kong if you dont have one already, and put that in his bed at night.
He - (and you) should think of his bed as his special place, not as a place where he is banished to.
Maybe invest in some ear plugs
And good luck!