Lost pre-share key in Aruba

After taking over several Aruba Instant swarms, I lost the pre-share WPA passkey to a wireless network. Luckily, in InstantOS I could still see the key unencrypted with this enable mode command:

sh run no-encrypt

Other blog posts said to use:
encrypt disable
sh run

However, that didn’t work for me. That may only be for the full controller.