Using version 0.7.5, I can't remove shaped/shapeless blood orb recipes. I can add them just find, but mods.bloodmagic.BloodOrb.removeShaped(<AWWayofTime:sigilOfTheFastMiner>); returns this error:

ERROR: vanillaTools.zs:41 > No such static member in mods.bloodmagic.BloodOrb: removeShaped
ERROR: Error executing vanillaTools.zs: minetweaker/api/item/IItemStackAny

Just use the normal recipe removal.

That works perfectly. The wiki page should probably be updated/reworded to reflect this, as it currently states that each handler can have recipes added or removed.