Sure you can rebroadcast it. Just get the raw TX e.g. from -> https://blockchain.info/tx/5613f7de027a76011cb6ab88488ade90dd1a330f2c451846c4680c27fcb1a6e5?format=hex
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
and push it via your own node or a service that is offering this -> https://en.bitcoin.it/wiki/Transaction_broadcasting
We cant tell you how long exactly it will take every node to forget about your TX, but its a matter of days rather than hours. If you want I can rebroadcast your TX every ~1 hour.