I couldn't help it but I had to post something.
Firstly, I my condolences to the family.
Secondly, I am sorry to ruffle the feathers of all the wannabe future commanders here but as far as I know whenever an essential crew member is incapacitated it's a mayday situation & despite what many seem to think here a flight operating without a captain is most definately a serious problem. If it were not such a problem then surely the company would have instructed the FOs to continue as far as their duty times allowed.
Having said that we cannot second guess the decision of the guys onboard since that probably made the best decison that they could come up with.