You probably could drop the tren and lower the test dose a bit and stay on until the cast is off. Seeing as your already halfway through and shut down, staying on with a lower dose should stop you going catabolic an dloosing what you have gained let alone the fact that stopping a cycle AND training is the worst you can do. The gear may also help the recovery of your injury aswell.
Thats my two cents worth, guessing anyone who sees that will says its wrong but it does make sense and comes down to a personal choice, you could always smash legs out hey lol