We couldn't live without technology, so no. The last time we lived without it, we had only just exited the ape stage. Technology doesn't mean just computers and ipods: technology is fire, houses, walls, shovels, farms, etc. If we do not posses it biologically but do use it to live/survive, it is technology. Sea otters are one of the few animals that used technology to live by implementing rocks to open clam/oyster shells. Minor, but it IS technological.
Technology in the modern and complex sense could very well lead us to a point where we are fed up and decide to leave it behind. I am certain, however, that not all humans would do this together unless something forced us to.
But we have to remember that technologies (modern or primitive) are not separate from our existences. Technology has become a part of our being in ways that many of us do not realize. In this sense, we are cyborgian. We have glasses, pacemakers, fake arms/legs/organs, contact lenses, fake nails, makeup, clothing, tattoos, piercings, just to name the physical. Other technologies, like those that help us study DNA, have become huge cultural/political/racial/personal identifiers and statement makers. We use so many technologies just to tell the world and ourselves who we are (computers, facebook, LiveJournal, twitter, cameras, painting supplies, musical instruments, music playing technologies, etc.) There are many more examples of how technology has become a part of our lives, but I won't get into all of that.
What I'm trying to say is, technology is a perspective and a modern understanding of ourselves and our universe. It has given us, or rather, through it we have given ourselves, a new paradigm, new language, new philosophy. These have been created at various stages of our history whenever new technologies spread through the world. Even if we "gave up" technology, it would still exist in us.