IMO, and I do not know a ton about breeding, but if it is a passing score and it is an exceptional dog otherwise and being bred to a passing female, I don't see the problem.
ANY litter, statistically, has the chance of throwing pups with these issues. They are doing the best they can to set the dogs up for good health, and I can't say there is any way to blame this on the sire.
Danielle, owner of...
Fraggle Rock Collars
Fraggle Vom Richcreek CGC CA
Red Dog's Reconnaissance Man CGC
General Patton Vom Winter Storm