Been there done it. Same thing happened to me with a former travel trailer with manual awning. Out in the middle of the night in the thunderstorm with only my undies on I released the one awning arm. It came down with such force I was thrown into the side of the trailer and all the water landed right on top of me. Lucky I did not crash thru the sidewall. Only some side bruising and embarassment. Was able to straighten the roller tube by lowering as far as I could and blocking both ends. With tube rolled with the bend upwards I was able to straighten it out by forcing center of tube with some weights.
2013 Tiffin Allegro 36LA OPEN ROAD
2012 Honda CRV AWD toad