Hey I’ve been there. Take it apart carefully and inspect it as you go. Do lots of reading, clean it up, put it back together and hopefully it won’t happen again - but know that it might if you don’t find a cause. Sometimes things have to get worse before a cause becomes obvious.

I’ve got a Prusa, but I’ve had to replace many different parts on it, sometimes multiple times. Some of that was factory issues. Some of that was my fault. Some of it was just bad luck.

I still love the hobby, but it sure as Hell isn’t trouble free.

The problem is I don’t even know what happened or how the pla got around that silicon sleeve.

It’s kinda normal. If the hotend clogs there’s only two places for the plastic to go (or it can stop going into the hotend), the other one is up. And this is both more common and way better than up.

It doesn’t look like it, but the printer pushes the filament with a lot of force. It’s normal for it to just go into some completely unexpected direction that you can’t replicate by hand.

Anyway, if it’s working correctly and what bothers you is the extra plastic, just heat the printer until some 160 °C and pull it away.

Maybe its best to put it away for some time and then come back to it when you feel its time. I mean, its a hoby and it can be frustrating, but its worth IMO. Dont forget its a machine and not a plug-and-play device.

Im in this hoby for 10ish years and I never had a leak. Probbly because I was reading about that even before I got my first printer. I did have many other issues and failures, but they almost never happen anymore. Most of the crap stopped after I got Ultimaker 2, but I believe experience is the main reason.

Like others said, your nozzle wasnt sealed (tightened) against the heat brake properly. You have to heat up your hotend before tightening, but dont use full strength or you might break your nozzle.

Now you can clean it up or just replace heatbrake and nozzle, at least parts are available everywhere