If this is true I feel like you should be unbanned due to the fact that he didn't let you speak he just jailed and banned! If he used the logs to see your kills and assume you mass RDMs then he should really re think how he handles situations! I didn't expect this from him as he was previously a lead team member! So my final opinion is

I was trying to tell him about the NLR but he told me that I should have just made an F1 but I didn't have time to because most of the time S3 is pretty hectic so it takes quite a bit of time for staff to respond to an F1. I didn't want to be arrested and get fined so I had no choice but to continue killing them (AFTER THEY ATTEMPT TO ARREST ME)