On sunday i came out of work, on the way home i reached a roundabout, sitting at 30mph, so clutch in, blip of throttle, down in to 2nd, Before i let the clutch out the back end lock up and kicked out. I tried restarting it, no oy, couldnt select a gear either. So pushed it off the road, got it started, and away i go again, except this time it feels as though the back end is wanting to push out, eg its feeling very light. I thought, right mmm puncture, checked it, nothing. Road at 30mph to the nearest garage, checked the pressures, fine. Ive ridden it home, about another 10miles. Went out on it this morning, and it still feels the same. Almost as tho it isn't connected to the road, went around a corner. Brake lightly for the junction and the back end wanted to go to my offside. I havent been going at speeds even close to what i have done before because of it. But its beginning to bug me now. So much so im a bit frightened to go out on the bike. Any suggestions? Oh, its an SV650 curvy