Zombie episode in Instacast

I had a zombie podcast episode in Instacast. It was cached and refused to be cleared.

The solution:

The downside was that I had to go through Instacast’s settings; these are not synced, and many of the defaults are not to my liking (such as auto-caching).

Also, Instacast’s iCloud sync has no feedback. If you're unsure whether the sync has worked, create a backup of your subscription list by emailing it out.