The space orbiter Endeavour last weekend zigged and zagged its way around trees, light posts, and under power lines before arriving at the California Science Center many hours behind schedule. But some residents were thrilled by the delay, because it gave many more of them time to see the space shuttle up close and personal. The delays did cause a bit of shuffling around in the schedules of planned events such as the dance presentation at Crenshaw and Martin Luther King boulevards created by Debbie Allen and featuring a variety of performers from the community. The shuttle exhibit will open Oct. 30 at the Science Center.