It should be recoverable. I'm not 100% sure of the names but it sounds like you want to create "2x01 - Omega+Soundtrack" and (it will be blank at first) then you can go through that card's history and get back the old content.
I'm not sure I understand what happened, but the basics are that nothing is ever completely deleted; things are just added to the trash. If I have a card named "Episode 2" and I delete it and then create a new card named Episode 2, then the prior revisions of the deleted card will show up in the history of the (re)created card.
Just because it sounded like things went funny, I would recommend that you clear your cache by going to /wagn/admin/clear_cache.
Well, I recreated the things I lost, but recovering from history did just help in another instance.