OMG... Thats funny sh*t!
I just started my first batch 3 days ago. I checked it after day 1 and the 3 piece airlock was starting to gush down the side... quickly replaced it with a hose and a bucket of water (rock inside to hold tube under water).
My wife was pissed enough when she came home and the whole house reeked like hops and barley!
I can't imagine if it blew the lid (like yours) or worse, it exploded!!!!!
Looking forward to this crazy ass non $ saving experience!