Tactics are simple, first part of the tour: ride conservatively and try to lose as little time as possible to your main rival Pog and hope that the shape get better than better. What about other rivals? Sure. Remco and Roglic can't be disregarded, but it's in the high mountains, Vinge's terrain, where he should try to drop them, not on a risky gravel stage. If Vinge's gets close to last year's form from stage 14 and forward, he will have plenty of chances of putting time into Remco and Roglic, for exampel stage 15 to Plateau de Beille.
If Vinge didn't crash in Basque and had aproper preparation for the tour, situation would be different of course, but as it is now, he must focus on Pog firstly and save as much energy as possible to try be as good as possible in the high mountains.