The last time I broke a mast like that it was due to insufficient diamond tension. Did something break first (like a diamond wire) or did the mast just let go?
Diamond tension on that mast is (or should I say "was") adjustable, we were running it around the 3/4 mark on the day .....
Nothing else broke with the rig ...... & I'll be using all the setup off this mast on the replacement mast, nothing is damaged except the alloy section itself