Undoing a WP-Optimization?

I’m using the WP-Optimize 3.2.1 plugin on my blog. I just ran an optimization on the page without unchecking one of the items – the “delete pending comments” box. I had several comments in pending that I did not want to have deleted, but by the time I unchecked and refreshed it was too late.
I’m not very good with the technical side of my wordpress site, and Google has been no help in finding a solution. I just want to know: is there a way to undo the optimization and get my pending comments back, or are they gone forever? I’m assuming they’re toast, but wanted to post here in the hopes that someone with more experience than me may know a way to bring them back.