Well, the AAIB report (thanks for posting, incidentally) doesn't really add much to our overall picture;
Whilst in the landing flare, he became aware of a glider coming towards him in the opposite direction "filling the windscreen."
and
The student pilot added that he came to rest about 250 m from the threshold of Runway 22, approximately 100 m from the glider; his instructor estimated that the two aircraft were about 200 m apart when they stopped.
On the basis of that, I don't honestly know what I would have done on my second solo. I'm pretty certain that, 27 years later, I would have elected missed approach, go around with full power away from the glider but careful of obstructions. I'd be pretty certain that the glider wouldn't making the same choice.
Who knows? we weren't there. He walked away from a repairable A/C, so he deserves some credit.