I opened with super fast pool:
6x zerglings, queen, expand, run queen to expand, while doing new queen
The 6 zerglings actually came too late.. ? herp? Are you supposed to do even earlier pool?
The cannon also blocks pathing to other expand, so you*re at 1 base. You can do spine crawlers and run them to your expand, but the expand falls before they finished the cannons (also taking long to burrow again).
So you can of course manage to break out without losses with ravager transition, but you are at 1 b-ase.
Comments on how to react when face it please.
p.s. I forgot you need to place the first overlord at your expansion, sorry offrace zerg. Anyways comments welcome.