There is not much research in real people for these supposed effects on muscle hypertrophy potential. It is mostly derived from petri dish studies.
However, the anti-inflammatory effects of the medication and faster healing of your shoulder is probably a better cost-benefit ratio than not taking anything and add a week off training your shoulder. Besides, the longer inflammation goes on, the worst it is for your tissues in general.
For me, this would be a no brainer, hell, I'd even apply topical PenSaid on the shoulder (if it were not just approved for the knees).
Anyway, good luck to you.