Abandoned transaction with low fee and now can't get any transactions to confirm
I'm not an expert, but have you tried setting the transaction to "abandoned" ? 
Also disabling the wallet broadcasting in the meanwhile?

You can check this two links on how to recover a wrong transaction and how to do a proper full rbf 

https://en.bitcoin.it/wiki/Fee_bumping#I_sent_the_stuck_transaction

https://bitcointalk.org/index.php?topic=1802212.0

( i am aware that by this time either the transaction is forgotten or confirmed  but there would be more people that needs this answer (in fact that's how i got here))