Well it depends on the type of injury you speak of. Shoulder pain by the sounds of in could be from pronation (forward rotation of your shoulders) caused by muscle imbalances between the pectoral, anterior delt and back muscles. I can assume this becasue of the way it was aleviated, probably by pulling the shoulder back through shoulder chest stretches.
Now prioritising a chest workout or using a benching shirt in my mind would fascilitate re-injury.
I would first do a series of low weight pressing chest workouts with limited shoulder movement and focus on upper back lat flexion to create a solid platform and develop a habit of not allowing your shoulders to move forward.
Another aspect of this injury is the fact that you may be very good at training chest and its effective steady development cause this pronated impingement type pain.
In summary i believe it may in fact help in the short term but i dont think this is an ideal solution, the solution is bac prioritisation in the short term, low weight strict chest workouts with shoulder isolation and lots of the stretches you learned from physio.