The Ohlins dampers are rebuildable. I would send it in and have it rebuilt.
It's one of those things you don't need, until you do.
The bike should be fine without it, but I kept the dampers on both my spine frame bikes.
A friend had a California with a loose mounting bracket and tight adjustment. It had a weird weave until I found the loose bracket under the fuel tank.
If you're a hard charger, you might find you would like to have the damper in place in bumpy high-speed sweepers at near the ton. I've had my Sport 1100 weave a little on occasion. I don't really ride it like that anymore, though...