Posted: 02/06/2014 at 07:35
To be honest I wouldn't split it now - it'll just be forming it's flower buds - that doesn't mean that it won't work, but personally I wouldn't want to take the risk.
However, if you can dig up a huge rootball and move it quickly and water it in well it probably won't notice it's been moved.
But you say it's huge - how huge is it? Perhaps splitting it would be ok ..........