So I snapped two spokes on my rear XT 29er wheel in a race, to its credit the wheel didn't go significantly out of true and I was able to still finish the last 20km of the race and even contest the sprint finish. The two straight pull driveside spokes snapped just above where they are threaded to the hub.
Now I'm baffled as to how to remove the threads, which are probably less than half a millimeter. Only want to resort to tapping as a last resort.
Also, I know its only XT and the hub can be replaced for only $50, but its a good training wheelset which I'd prefer to keep :