Britney Spears' manic first husband was tackled and chucked out of her wedding by gun-toting security guards after he dramatically crashed the singer's big day. Jason Alexander, 40, livestreamed himself sprinting through woods in Thousand Oaks, California, as he approached the venue. Before being confronted by security, he managed to get inside the rose-covered wedding … [Read more...] about Britney Spears’ first husband tackled and chucked out of her wedding after he crashed it