Most likely the upper fork tubes just rotated a bit in the triples, pull up to a post/tree/retaining wall/vehicle bumper with your front tire and push the bars straight, the tubes will 'unrotate' - I've been doing that for 50 years. Odds are 98% that's all that happened. This is the other possibility, the handlebar mounting hardware got tweaked - it may need to be loosened, realigned and retightened. There's a slim possibility that one of the two bolts going through the upper triple got bent and will need to be straightened but that's rare. Didya get the 900's TM-40 to stop p!ssing all over ever thang?