Extract TileEntityMacerator.class from the industrialcraft server mod - ic2/common/TileEntityMacerator.class
Open the class in your favourite hex editor and do a search/find for hex values "B2009A08B7".
When it shows you where it found those hex values, change the 08 to a 05 (so it becomes B2009A05B7)
Save the changes and copy the class back into the industrialcraft zip, overwriting the original.
If these instructions do not make any sense, don't attempt it as you can easily break it. It's only a one byte patch though so it should be very straight forward.
This will change the blaze rod macerator recipe so it gives 2 blaze powders instead of 5, so it no longer gives a free emc gain.
Ultimately though you will want to patch a whole lot of things if you are want to balance EE out without removing it.