I can not stress this enough.. the redirect will have zero effect on game play, pings, lag, or the like. All it is is a bunch of files on a server - doesn't matter where they are. The only thing it effects is how quickly you can download the map. After that there is no interaction.
The redirect move was simply copying the files to New York onto a server and then updating the config on the servers to 'give' the new location to connecting clients. The switch back just updated the config to go back to the server in Canada. Other than the config change the game servers were not touched in any way and the change does not interact with players who are either already in the server or who already have the map downloaded.
Unless an issues affects ALL players on a server there is nothing we can do.