I don't know that Hagee has changed, and I certainly would not call him an anti-Christ.
We used to worship there, when in San Antonio, before dispensationalism became so offensive to me.
But as far as I know, Hagee has always been a dispensationalist.
My first pastor, Dr. Duane Spencer, also from San Antonio, was both a dispensationalist and a Calvinist, until 1977 when he rejected dispensationalism and was welcomed into the OPC.