Connectors are death
After by chance finding out the connecter loosening on my first fixed bike I have resorted to always connecting chains the old fashioned way.
On fixed mind, I understand the standard double "L" links could be forced to separate when backpedaling due to the resistance.
Geared no qualms.
Not advice, just a superfluous comment because you probably already had figured out the solution..;)
Happy you escaped unscathed, and the bike relatively.
Connectors are death
After by chance finding out the connecter loosening on my first fixed bike I have resorted to always connecting chains the old fashioned way.
On fixed mind, I understand the standard double "L" links could be forced to separate when backpedaling due to the resistance.
Geared no qualms.