My analysis piece. Some of you are not going to read this full thing, so here's the short answer: it likely crashed.
For those interested, here is the...
Long Answer
For those saying that the wreckage looks like it was shot down. That simply cannot be true. When a jet is hit in an air collision, the jet is quite literally decimated. Many of its body parts burn and crash in pieces. The body of the jet is destroyed or disfigured. You all can go look at the picture of the Mig-21 Bison shot down by PAF, the pieces of the jet are everywhere, and you can see the main frame disintegrated and disfigured.
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As for the Mig-27 photos, you can clearly dissect the whole thing into three photos, one showing the main frame, one showing the engine, and the other showing a piece burning. The main frame has no large burn marks on it. The engine however has its whole lower part burnt black. There is also a photo of the front landing gear completely intact (only one of the two wheels is missing) entangled in roots, just goes to show that it crash landed and the gears were out when it crashed. You can see that the middle of the main frame is completely intact and not disfigured, the wings and frame, while the part at the back is more the less detached rather than disintegrated.
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Now to answer those who might be wondering why the engine is separated and burnt, and why the front cockpit is missing.
Some people stereotypically assume that a jet crash is supposed to be a crash with a large crater, lots of stuff burnt black, and a large pile of junk just burning. That is the case if the jet stalls and crashes nose first, or sometimes engine first as well. But sometimes, jets can crash gliding down, and when they do, their engines often catch fire. There's a chance that the main frame can turn out alive and intact and not disfigured, that is unless the fire caught at the engine part runs down to the front as well, which doesn't have to always be the case. Look at the picture below of a YF-22 that crashed. Those are not its afterburners engaged, that's the literal engines on flame.
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The flames at the engine likely disintegrated a part of the back, causing the engine to completely detach from the jet. As for why the cockpit is missing, I am not too sure but here's a picture of the Harrier Jet below.
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You can see its engine part burning. You can also see that its nose suffered a blow after it crash landed as the jet, due to momentum, turned down after crashing against the ground. Another feature you will be able to see is its landing gears seen literally detaching from the jet.
My Theory
Since it is claimed to be on a training mission, it was likely at low speed. After the jet's engine failed, the jet was likely glided down. Before and near the impact, the pilot ejected, and the jet crash landed.
That's my speculation.
Comments welcomed.