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Unfortunately, if I could help I wouldn't have made this post! :(
I was seeking to find out if anyone else knew - e.g. a witness.
How about posting your question to @sc-steemit, who replied somewhere in this thread - perhaps they could help.

But there is still the option of just selling any of the problem alt-coins on poloniex such as STEEM for bitcoin, and just transferring that out to another exchange such as bittrex.

Thank you so much @xaero1
You should join PALnet and Mnnowsupport project! You can share your views with more than 2000 people in a single click

https://steemit.com/minnowsupportproject/@heelzkinu/minnowsupportproject-why-you-should-join-palnet-and-minnowsupport-project-201775t72913581z

Ok, thanks... will check it out :)