I'm not certain, but I'm guessing - no.
Ibanez usually indicates the wires for the series links on HBs even if they don't use them in that diagram. In the diagram for the AG series, they don't show those wires. My guess is, the only way to add coil splits would be to get new pickups that have the wires needed.

Here's a link to the wiring for an AG: http://www.ibanez.com/support/wiring/2005/ARTCORE-2v2t.gif
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