Reading the -34 (https://www.digitalcombatsimulator.com/en/files/1946809/), I'm definitely leaning towards the growl being incorrect when the select jettison switch is moved out of OFF. It specifies that the AIM-9, when jettisoned, is launched unguided - meaning the seeker should be inactive.
Additionally, it notes the select jettison switch as disabling normal release and arming circuits - so it should be expected that the seeker and fuze are unpowered when the switch is moved out of the OFF position.
The section on the wingtip launch rails indicates that there are 3 connection points to the missile, one for the guidance/control section, one for the fuze, and one for the motor. It seems likely that when jettison is selected, the guidance and fuze sections are unpowered and only the motor igniter is powered.
The -1 notes speed brake on approach variously as "as required" or "as desired", which suggests to me that its use is optional, either based on pilot preference or squadron procedures. Speed brake usage is not elaborated on further other than what is shown in the diagrams.
