Pretty sure Antony Flew doesn't believe anything anymore, since he died last year. Even before his death, he was suffering from some form of dementia and had difficulty explaining what the believed and why to interviewers. In his final years, he had been manipulated by a small group of evangelical Christians, who basically lied to him about the evidence supporting evolution. Even with all that, his supposed "conversion" to theism amounted to deism, not full-blown Christianity.
As for the pastor's claim that scientists are discarding the Theory of Evolution - that's a pretty common lie. They've told it for so many years, I'm wondering if they're trying to convince us or themselves that it's really true.