my older style khe hindenburg 152mm 3 piece cranks are such a pain in the arse to take the arms off. ... the fit on the ti spindle to the crank arm is amazingly tight
but I am using the fsa gun drilled ti spindle also - but whatever
because my fsa spindle has such a larger bolt size than a profile spindle does
I use a 12mm socket and a small socket extension on the spindle after removing the bolts
and hammer the thing with a mini sledge to get the spindle to slide off the crank arm thru the bottom bracket. its a pain
it will ruin your socket and extension
but its the only way ive been able to take them off a bike so far.
there is titanium anti seize compound that you MUST use on titanium axle spindles and crap because some how the diffrent metals will naturaly weld them selves together over time making it darn near impossible to seperate the two after this happens.
anti seize compound will prevent this above scenereo.