Fascinating post. I have an avid interest in this incident and the downing of Lt. Mains Liberator.
I live a couple of miles from the old airfield at Seething and have been working on a documentary film project about the 2nd AD and 448th BG for some time. The Lt. Mains / Me262 attack will be an important sequence in the film. I have spoken with Harold Dorfman (USAF Ret.) who took the famous photo of Lt. Mains aircraft in its death dive. I have also interviewed Edward Paretti who was tail gunner on the Torrance crew that day and was credited with a 262 kill.
Furthermore i have since been in contact with a gentleman who researched Alden Hershisher's story and which ultimately lead to Alden's remains being repatriated to the U.S very recently. I don't think that i ever heard reference to any ramming but i could be wrong. There are so many sources and angles that it can make your head spin.
I do have copies of all the mission reports from the 448th crews that day and need to sit down and go through them, deciphering the handwritten notes. I have long thought that it would be cool to attempt to recreate the battle, to try and plot the aircraft using all these sources.
Anyway I don't know if that helps you but as I say this incident resonates with me.
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Always good to hear from fellow enthusiasts with thoughts, ideas, anything.
Cheers,
Evan