If you feel comfortable with invalidating these three transactions: https://blockchain.info/tx/c76068178d3e0cec7660cfea13b0326516707d7b2410e4987441026eb6662588, https://blockchain.info/tx/5506dd186fc7ef3f5b3cd24677927d77773b103397c8b747f94fad8a9255bf32, and https://blockchain.info/tx/4c6a6058ba14bff85323d50844ca52d4a25ffa72464555184568888f8480c7e2, then you can remove the one I linked to earlier from your wallet and be able to resend the Bitcoin from that transaction. If any of the above three transactions are also yours, then the coins sent by them will also reappear in your wallet.

The following will essentially revert your wallet to whatever it was like before any of the linked to transactions existed. Just go to Help > Debug Window and then the Console tab. In the box at the bottom, type

This command will remove that transaction and the above three from your wallet, thus allowing you to resend the Bitcoin locked up in those transactions. It will be as if those four transaction had never even happened in the first place.