My very first batch after three months I was like "sweet these must be safe I can move them". Took them out of their containment bunker (Rubbermaid bin with a lid) and put them in a cabinet. Middle of the night two of them popped and made a giant sticky mess. This was probably due to a gusher infection, none the less though they can still pop after a long time.
I would grab a Rubbermaid bin and put these in containment. After like two months in bunker containment, if you have a nice cool spot (under 50f) move the bunker there. Or if you have a beer fridge in the garage, put all of them in the fridge and leave I the fridge. Once they're in the fridge they should stay safe in the fridge (relatively safe, still treat them with care).
Safety disclaimer: Treat them with extreme care from now on. The recipe could have just finished high and without the carbonation you maybe only tasted the roasted and chocolate grains. Either way it's better safe than sorry.
I'm a bit confused on how long they've been in the bottle. You bottled after two weeks of fermenting, how long did you wait till you opened your first bottle?