I'm with Joddly - unless it's causing issues, leave it in
I had some metal work put in my jaw after I broke it in a skiing accident and it was there for years without causing me problems until I had a jawline infection as a result of a tooth root canal infection. recommendation was to do surgery to get rid of the metal to prevent any future issues - duly done with difficulty as the bone had grown over the screws and it's been fine since.
I still have some other metalwork in the bones but it's staying!
I would however get expert advice first as every case is likely to be different so a surgeon can advise better
good to meet you FT albeit briefly. come back next year but better prepared.
there were a lot of people saying how hard that bike course was with the mud - even a few of the seasoned pros said it was the toughest bike course they'd done outside Maui. I felt for the guy in the sprint who did it on a fatbike - his huge tyres must have collected about 10kg of mud on them. not a bike for that day I would suggest!!
flyers - the bike course had changed from last year and was tougher with less open stretches - quite a few people said it was hard to take a drink from a bottle as you had so little time to take your hands off the bars. many of the pros wore camelbaks for the bike leg so they could drink easier (benefit of experience there) plus many had changed their tyres to mud ones after a recce. so the course changes and the mud would have made the bike slower over last year.
I also think that many who entered really had no concept of what singletrack riding is like or riding in mud - yes, they might ride a MTB at times but probably more on dry open tracks rather than testing twisting wet singletrack in trees. seemed to be quite a few who had never done any MTB riding as well. just goes to show that MTB riding is a different beast to riding tarmac all the time.
other than the mud, most who finished had the usual big XTERRA smiles and no doubt many will be back next year.