Well all I can say is that I hope
TPR isn't put off either his PPL or PPRuNe by all this.
I had an excellent instructor during my PPL, and I would recommend the school to anyone. But I headed off on a solo landaway and made it to Shoreham just before a thunderstorm hit (see
here 
). There was no "Look at that magnificent CB... off you go Bloggs" as WWW puts it. We looked at the met, there were PROB30 TSRA on the TAF ... but we decided that it was ok and I could turn around. I went. It happens.
The difference, I think, was that I was able to cope better. Things were as bad as they could have got in my case - had the CBs been closer then i would have turned back before landing, if they were later then i would never have got stuck. TPRs school seems to be the problem here, because it sounds like he was sent off without the experience. However, you cannot call him a liar because he went off solo with crappy weather around. It can happen at the best schools.
TPR, don't go away. PPRuNe is usually better than this...