The "coat hanger looking stuff" inside cylinder heads is from the sand-casting procedure, they helped keep the mold shaped while the iron was poured. When the sand was removed, the wires stay behind.
After the cam bearing rearrangement, did he test-fit a camshaft to check that it turns freely? At my shop, if a bushing has to be removed, it's not getting put back in. They don't go in a second time with the same "press fit".