My bad, didn't read your post carefully.
If you have a watch only address, that means you don't have the private key, and therefore you don't have access to that address. When creating a watch only address you only have the public key. If you sent the coins to the watch only address, you might be out of luck.
But I saw that I used to sweeped coins from that address to my real address before. Just I dont remember how I did it before :S