As to that decision: there are 120 ways to arrange five letters. Assuming even two minutes per attempt, it's not worth the four hour penalty no matter how frustrated you are.
added: HitFix's Myles McNutt calls it "unquestionably the dumbest decision in Race history"; I'd put Heather and Eve's taxi ride ahead of it as well as Team Guido's "slow Forward," and expect to remember others sooner or later.
more! Flight Time and Big Easy speak with EW:
EW: Flight Time, no anger that Big Easy botched that task?
Flight Time: We had a plan going into the race that we would each do six of the road blocks. I had kept notes from the race because we thought the last challenge would be a memory thing. So we had each done 5 road blocks and I was planning to do the last one so he had to do this one. But there are no regrets.