Actually I don't believe JW's say Jesus did not get his body back. He was transformed, I believe. He had a body and has a body now. But then -- do you believe that Jesus laid down his life?
JWs do say Jesus did not get His physical body back. I have even heard that some JWs say that the body was taken and is now in state in heaven to be viewed by the 144000 I guess.
I have also heard the JW argument that Jesus gave His body (Luke 22:19) as a ransom and so did not get it back. But the Bible also says that Jesus gave His life as a ransom, and He did get that back. So not getting the body back is not consistent.
When Jesus rose, He did rise as a man, that is what resurrection of a human is, they come back to life as a human.
The evidence of His resurrection given by the angel is that "Jesus is not here, He has risen, go and see the place where His body was."
The body that Jesus got back was His physical body which had been transformed into a spiritual body, not a spirit. He could do amazing things with His spiritual body, He could appear and disappear and go through locked doors etc.
But to answer your question, I do believe that Jesus laid down His life. And I also believe that He got that life back.