I'm just back from holiday so don't know how windy it was today.
When learning, the plane can often be much further away than you think. I can imagine that as you turned on finals you show the whole of the top of the plane to the wind and all that area (wing, tail ,fuselage) takes the full power of the wind and takes your light aircraft quickly down wind. I think most model fliers have experienced this.
Ever since I learnt to fly R/C at Hanworth in the late '80s there has been talk of various types of interference though nothing has ever been nailed down, it is almost always pilot error...Probably!
I've helped out at West London Models for years,I often work over that way and will stop at the shop for tea, and help Rod in the shop serving, doing mail order, unpacking deliveries, checking emails etc., sometimes I provide holiday cover. One thing that I have always told newbies is , 'You will crash. As time goes on you crash less but the crashes get more expensive!'
It sounds as though you got away lightly.
@cosmicbike , there are fewer rugby pitches now, I think that the club has fewer teams. The council installed a couple of benches and a waste bin on the flight line, which is nice!