Tough55For your (and everyone else's information): When releasing tightly-wound clock mainsprings, you must carefully pull-up on the gear pawl(s) while holding back on the main spring, then gently release the spring a little at a time (be very careful of your fingers - it can take a fingertip right off); if you let it go all at once, the main spring attachment at the center will likely 'let-loose' of its connection from the momentum of the spring unwinding. That will cause the winding symptoms which you now describe.
Sometimes it will actually break the center spring-end right off from the sudden tension release and consequent sudden reverse movement - it can be a very severe shock to the clockworks!
If broken, it needs a new spring; if disconnected, take it to a repairer anyway, unless you are VERY good at clock repair.
Don't ask me how I know this!!
Thanks, JLB