One of the things Todt is apparently unhappy about is the suggestion that the stewards went easy on Vettel because he’s a championship challenger. A disqualification from the race is thought to have been considered, but ultimately rejected, so that the title fight wouldn’t be too badly affected.
If Todt does decide to bring Vettel before the International Tribunal then there’s a chance he could face further sanctions, most likely a race ban or a hefty fine. Todt has been a staunch advocate for road safety during his time as FIA president, and having one of F1s biggest names getting away with deliberate contact wouldn’t reflect too well on that.