Of course, HRam could suck, but we're paying him $22M, so we might as well see if the surgery worked.
We can hope for a glimpse of this HRam:
.947 in second half of 2016 (10th best in MLB)
.836 in first half of 2014 (31st best in MLB)
1.040 in a half season of 2013 (2nd best in MLB with 300+ PAs)
In 3 of the last 5 seasons, he's shown flashes of brilliance.
You don't cut a guy you have to pay $22M without seeing, if he has one last flash in him.
Yes, one can argue that three half seasons out of the last 10 is not good, and they'd be right, but with 30% odds and hopes that the surgery helped, rolling the dice seems like a no-brainer.
One might argue some of his recent bad half seasons were a direct result of shoulder issues, and maybe the surgery negates those bad halves.