Everything was printing perfectly and then all of a sudden on the very next print this happened (see image). Everything is all fused together with molten filament including the clips that hold the hot end in so, I’ve no way of removing it! I can’t even seem to heat up the hot end to melt the plastic (even in that special maintenance mode). Anyone have any ideas how I can salvage my P2S (I’ve only had it a few months 
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Most likely an adhesion issue. When was the last time you cleaned your build plate?
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I cleaned it a few prints ago but, the question is, how do I fix the head now when it won’t budge due to all that molten plastic fused to the clips?
That is a mess. I’m not familiar with any maintenance modes that might help but might check the Bambu wiki.
But manually, a heat gun and/or soldering iron or other hot tool and a lot of patience will be needed to remove all that. Since it doesn’t heat now, you may have had some wires get broken. And that’s why you have to be gentle - easy to break more wires as some are fairly small gauge and can be easily broken if pulled on too hard.
Also, search the forum. Lots of hints here on how to clean that up. You aren’t the first and won’t be the last.
And until you get conditions sorted to where you don’t have this happen, I wouldn’t print unattended on long prints or it could happen again.
What happens is filament can curl and reattach an end to the extruder where it behaves like a lava tube. The outer wall cools and hardens while the inside is molten and plastic gets pumped up and around inside the extruder.
It’s good to periodically check the nozzle for stuck-on filament. That helps the molten filament reattach. Also this happens a lot with PETG that isn’t well dried. For some reason it makes it curl when exiting the nozzle when plastic should always exit smooth and straight.
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You’ll likely only need a new silicone sock, and if you have no heat you will likely need a new hotend heater nozzle holder [unsure what they call it for p2s] as youre likely to find the wires severed. But with any luck, thats it and youll be fine.
Soldering iron set to low and some patience will get you there. Try to expose enough to remove it from the machine, then it will be easier to clean while in hand/in a vice. Whatever you do ensure the heat you are applying to remelt that plastic doesnt go willy nilly and melt the rest of the plastic in that toolhead 
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Ah, thanks guys, I never thought to use a soldering iron but, that seemed to do the trick 
I couldn’t save the hotend itself (broke some of the heat-sink fins trying to pry it out with pliers but, luckily I had a spare hotend and fitted that and all seems to be printing fine now. Thanks again, I was afraid I would have to change that whole assembly and I’m not confident taking that apart after looking at the bambu lab wiki!