Not exactly. My understanding is that the FBI wishes for the phone in question to remain within FBI custody at all times, which makes it more likely that any cu

Not exactly. My understanding is that the FBI wishes for the phone in question to remain within FBI custody at all times, which makes it more likely that any custom FW Apple develops could be leaked or replicated. What I propose (obviously a compromise) is for everything (FW creation, brute force attack, download of data) to occur within Apple's custody, network, and for Apple to then destroy the phone. Apple would not even need to disclose publicly how they accessed the data on the phone.