I had this too, was flying with 6 GBU-12, all went well until i dropped my last GBU-12, my AG mode switched automatically from CCRP to CCIP and the TPOD caged to boresight.
I attached a small trackfile with only one GBU-12 and TPOD as my loadout, as soon as i release the GBU-12(last because the only one) the above mentioned happend, easy to replicate. F16_last_gbu_CCRP_auto_switch_CCIP.trk