Things seriously blew up between Zachery Ty Bryan and his girlfriend before their arrests this weekend -- and TMZ's got the messy play-by-play ... and honestly, it seems like the "Home Improvement" star’s lucky to be alive. Lane County Sheriff’s deputies tell us they responded to a reckless-endangering call near a camping area outside Lowell, Oregon, on Saturday -- where they found Zachary in a pickup truck with his fiancée, Johnnie Faye Cartwright , and their three small children. Deputies say