No. They were not intended to be jettisoned. The capability was for emergencies only. In AH it would be used every time somebody carried them. It is like asking for a four cannon Spitfire.
In AH when those tubes are attached to your wings, it becomes an emergency if a storch finds you. The tubes were made from steel which was a scarce war materiel so the rule against was for the sake of the material. Anything with those tubes caught by allied fighters died if they didn't jettison them. Makes you wonder if the foundation for the rule was to get pilots to push through to the bombers no matter what versus dropping the payload to cut and run. We only see combat footage of a single 110 firing those rockets while everything else in AAF combat footage had clean wings when it came to those tubes.
Allowing the explosive bolt to be triggered might increase the use of those rockets adding more of that dimension to the game. In a positive note for creating activity, if more players are willing to take the chance of getting caught because they can jettison, you will have more targets in the environment. Over the years while listening to and reading text range in all three countries, not being able to jettison was the single reason the majority refused to use those rockets. Probably why very few are any good with them today even though it looks like Hitech accounted for the 40 degree spin deviation.