Did the President salute or hug the Medal of Honor Winner this time?

Almost a hug but definitely a hand shake.
“President Obama grasped the prosthetic right hand of Sgt. 1st Class Leroy Arthur Petry on Tuesday, awarding him the Medal of Honor for saving two comrades’ lives by hurling away a grenade as it exploded, taking his hand.”
The Seattle Times:

Petry, 31, has also been awarded two Bronze Star medals and a Purple Heart, among other honors. He serves in the 75th Ranger Regiment unit at Joint Base Lewis-McChord near Tacoma, and has made deployments to Iraq and Afghanistan.