No way RA or the writer or dierctors would have known about JB at that point of time! As to goodness in the JB character, I have absolutely no problem with that and don't get why it is so hard for many others. Surely he did despicable things for very flimsy reasons. But as I read the story, by becoming LN he atoned for it. He didn't pretend to be LN while still being JB on the inside (like Connie pretended to be a person she wasn't). He believed in LN values and lived them, enduring the prison sentence and risking his life many times. I don't know if it makes sense under the psychological aspect but for me it was always totally clear that he was that admirable character LN and that I can still admire him and that it was a sad and tragic thing that JB took over again, but not something that destroyed the character unless I ignore it.
aajivikako meso milauna mukrbhamiuo baluwama jindagika harafharu koriraheka shramjivi nepali dajubhaiharule bideshma dekhayeko sahityik jagarukta sachhi nai salam garna layakko chha. tapaiharuko prayasle nepali sahityalai euta naya aayam ra naya uchai diyeko chha.subinjiko abhibyakti shaili ramro chha tara kahikahi fela parne barnabinyasko kamjori daatma baluwa lage jasto bhayo. karyakramma bachan gariyeka anya kabitaharu pani sametnu bhayeko bhaye ramro hune thiyo. wish u all the best.