Other views may differ but the chasing group didn't have the legs to make it back from what I could see. Even if Stybar had made it across, Kristoff is very strong and there's nothing to say a two up attack from Etixx would have softened him up, he would have just followed the wheels.
So at least leaving Terpstra out there guaranteed EQS a second place. Kristoff would have won a bunch sprint anyway so I don't think there was much incentive for EQS to bring the race back together and risk getting no one on the podium.
It does race some questions about the final 15kms of Flanders though, it's a pretty dull finish that does little to influence the outcome of the race after the final ascent of the Paterberg.
Totally agree - it made no sense for Stybar to chase his own team mate down. It wouldn't have helped Terpstra and the chances are he would have dragged more capable riders with him.
The other major factor that influenced the race was the fine (benign) weather. there just wasn't the early selection that bad weather can force at times. The finish is a bit dull but the race has to differentiate from other races at this time of year and wants to offer something for all types of rides.
If you look at races like Amstel Gold with its late ramp it pretty much favours the puncheurs whereas its not inconceivable that Flanders could end in some sort of bunch finish. The same rationale applies to MSR where they took out the steeper climbs again to encourage the likes of Cavendish etc to race.
Despite Liege Bastogne Liege being a pig ugly finish its much more engaging with that uphill drag near the end