Not exactly, I'm wondering if they both could have moved to meet in the middle.
If so, the ISS doesn't really have any propulsion capabilities, only small thrusters for stationkeeping.
The ISS has a propulsion module made by the Russians. I can't recall the name, but it starts with a "Z."
On top of that I doubt it would stay together if you tried to move it. It's not designed to move.
How else would the orbit get reboosted? Shuttles were routinely used to reboost the ISS orbit.