I swear I saw a program on tv a few years ago where they did the same thing and the fight was successful. Landed across the river in the field they were trying for. Couple of the original POWs were there.
You probably did. From Wikipedia:
A replica of the Colditz glider was built for the 2000 Channel 4 (UK) 3-part (150 minute total) Escape from Colditz documentary, and was flown successfully by John Lee on its first attempt at RAF Odiham with Best and Goldfinch in tearful attendance. It is currently housed at the Imperial War Museum in London. The Channel 4 material was edited to 60 minutes and shown in the US in 2001 as Nazi Prison Escape on the NOVA television series.