Akeem had already admitted to taking some of Isaac's coins / discs after the task, so why was Tomasz annoyed? - Was it because he waited until after nominations to announce he taken 4 discs from Isaac instead of three?

Because that's basically what it all boils down to, and hardly the crime of the century like hypocritical Tomasz made out.
I wish Akeem would put that that low rent fake Nadia Almada wannabe back in his box. He's really starting to annoy me now.