obsolutely agree with you there.....
shoulder is one of the most complex joints in the body so def rest it otherwise will only get worse specially with all the stablising muscles/scapula and rotator cuff! can turn out to be big drama ensure you rest it no matter how good it feels..
if you must do something do light weight presses bringing your elbows anteriorly (forward infront and pushing up) single arm (and injured arm first) at a time and no more than 8 reps....if you cant manage 8 when you do the bad arm do no more than the injured arm on the good one