My new TB America weighs 497 pounds as delivered. My 2003 Harley Ultra Classic nears 1,000 pounds. Both bikes get the wandering twichies in bad winds.
Sometimes I ride it out, sometimes I pull over. Its a judgement thing where I take in the road and its general condition, any rain, any shelter, how I'm feeling, etc., etc.
Andrea, what you experienced is normal... but having the wisdom to ask and inquire - priceless! Keep on learning, keep on being careful, keep on enjoying!!