after accident can center of gravity be OFF?

[fototaker]

hola y'all! hoping everyone had a great safe NYE. recently got into an accident. on a turn where i slowed and actually stopped behind a vehicle, the scooter fell in traffic as the rear wheel of my 150cc scooter slid on a manhole cover (which i avoid like the plague) and didn't see. i slid and bounced off the car i stopped behind, then bounced back up and scraped a long line on a stopped car which was in the other lane. usual bruising of knee that ht the pavement and the scooter has the usual scratches and all. started right up w/o problem but since riding it since accident, the bike seems to wiggle a lot which it didn't before. i had checked the bike after getting home and even the wheels seem aligned (as far as i can see). the bike didn't slide much and aside from the fall and "bounce" it wasn't on the floor much. OR could it just be my imagination? has this happened to anyone else? any comments and advice/suggestions would be helpful and much appreciated. thanks!