Okay are you all ready for my SPECULATION on this weeks episode?
From the early spoilers we know that there is a scorpion sting this season. Didn't they show the scorpion last week when Taj & Hubby were at Exile? My guess is Coach is exiled, gets stung by the scorpion. Not serious enought to send him home. Then at IC, Jeff asks if he wants to "opt out", he chooses to go ahead with the challenge prompting Erinn to say the title "Martyr Approach". He is knocked out of the comp not by a twisted/sprained ankle but from the pain of the sting.
I know her buff is placed differently when she makes the comment than during the IC comp, but she easily could have switched it right before the challenge.