Times Cryptic No 29285 — Blame it on the root canal?

97:47. An embarrassing performance. I got through a good chunk of it in 20 minutes, but there were five or so clues at the upper-right corner of the grid that were very difficult for me. I spent possibly 15 minutes on the last clue, thinking it was extraordinarily difficult. It turned out to be a sitter. I blame it on the root canal I had this morning…