if this is the object your printing:
http://www.thingiverse.com/thing:437382
i think splitting the print might be a bit overkill. and getting it back together in one piece might be more trouble than worth. have you tried printing with support enabled? since it is horizontally symmetrical, you'll need to select everywhere. might not be the best looking on the inside, but with a little cleanup ...
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gpb01 23
Mmm ... both links do not seem to work ...
Anyway .. NetFabb free edition can easily split an object in many parts (just few clicks) and you can save each part as .stl to next produce separated GCode ...
Guglielmo
EDIT: Look THIS thread for "how to do" ...
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