It actually never ceases to amaze me how low this industry can go. So there are some poor sods who signed up to the CTC deal thinking it was a great way into the industry. They jumped through all of the hoops, swam in the pool for lord knows how long. Then get called forward and told to drop everything as they have a job and are thrown into the training. After that they get a nice pat on the back saying you did very well but we don't actually have any work for you. Then no doubt a nice HR person calls up saying they are "lucky" as we have some gaps that need filling for the summer so your back in. After that then presumably told to toddle off and go backpacking for a while until we might have some more work for you. Its all due to the recession you see......
I for one would be trawling through my contract and getting some specialist legal advice. We all know its probably a fruitless task in the end but it certainly wasn't what CTC "sold" as part of their marketing spin. Give BALPA a call and see if it can't get onto the agenda. Good luck to you.