That is the question!

I would setup a new wallet without the encryption and send my coins there.

In case you want to try do the following steps.
Be careful. Make sure you understand what are you doing.
You can make a backup of you wallet data folder in case.
Try first with one glyph. If you are successful you can try with a bigger amount.

1. Close the wallet & change the name of the wallet data folder (you know already where it is) temporary to for example "glyphcoin-old"
3. Launch the wallet. It will create a new data folder and DO NOT encrypt it. # Now you are in the new unencrypted wallet
4. Copy your new receiving address to the safe place (text file).
5. Close the wallet.
6. Change your current (the new) wallet data folder name temporary, i.e. glyphcoin=>glyphcoin-new
7. Change your old data wallet name glyphcoin-old=>glyphcoin again & launch the wallet # Now you are again in the old wallet
8. Send your glyphs to the new address (copy the new address from the text file).
9. Exit the wallet, change data folder name glyphcoin=>glyph-old again and glyph-new=>glyph
10. Launch the wallet # Now you are in the new wallet and waiting for your glyphs.

You can simply switch between two wallets by changing the folders' names.
If you have a dot "." before folder name you need to keep it also all the time. The name may depend of operating system. I don't know what do you have.