I am aware that this is a bit of an old topic, though I have come here in an attempt to revive the Spiral Knights server project.
My expertise is in C#, SQL, javascript/css/html, game and web development, and intermediate reverse engineering. Right now I am taking a look at what can be done in order to at least play offline or over LAN. If anyone else has any information, please send me a PM or email me at cooltripct@gmail.com.
I will start trying to figure the files out, and hope for the best - this game was amazing in my opinion.
Right now, I believe I am just missing the ProjectX dependencies, but it may only be a matter of time to replicate or find them.