Protomang

Sooo, I made a rather unfortunate mistake: I completed Thassilonians Sins in quest mode, and was all excited to finally get those reward cards... and then as I was organizing out my decks in the aftermath, I stupidly had the ordikons staff still sitting un-equipped with my wizard, when I mushed my dumb finger against the continue arrow. Needless to say, I was pretty bummed out, that scenario had taken me like 8 tries. I'm wondering if there is any way to go back and get it? Either going through hard mode, or doing normal again...? It's not the end of the world for me if not, but it keeps niggling the back of my brain every time I play now "man, this check would be a lot easier if I had that..." Anyway, if anyone has such information, I'd be most appreciative. - proto