Blogger Pro down...
Thank you to David for alerting me that despite pro.blogger.com being down today I could use tps.blogger.com instead. Now if only I had got the letters round the right way it might have worked! tps not tsp. D'oh!
BlogBack went tits up on me too. I hit my template code with a very large hammer and it's working again too now. The comments windows are now resizable and there is a friendly space in between the post time and the comments link which wasn't there before too. Hurray for my team and the age old technique of trial-and-error.
At least it's taken my mind of work problems.