I just got off the phone with USAA. Unfortunately, they did confirm that the BMW offer/rebate has dropped to $500 on all vehicles when financing outside USAA (i.e. with BMWFS).
2016 BMW M3 | Sakhir Orange | Delivery 7/16/16
Black Extended Leather | Carbon Fiber Trim | Executive | 19" Light Alloy 437 | Adaptive M | DCT