If you were uncomfortable with him it was for good reason and likely not just because he was drunk. I don't know why people feel the need to question their instincts.
Here is my take and you can take it or leave it. However I have much experience and I read people very well, drunk or sober. You also have to keep in mind that drunk you're inhibitions are lowered.
I would be uncomfortable if he did more than a brief hug of my daughter. Actually, I might have punched him if he'd done more than a brief hug. At best he was being inappropriate and over stepping boundaries. A bit too touchy / feely.
You have to realize that for many people they have two faces, one they show the public and one they own in private. This guy might be generous to a fault........but very easily he might be generous because it makes people believe they "owe" him so that when he steps out of line they dismiss it because "he is such a kind and generous guy". In short (because I don't have time to drag this out and explain in detail) the kind generous over the top routine is a cover for more sinister behavior......that whole Jumper can come to him any time for help and the over the top praise sent up that red flag......because it was over the top, over done. Know what I mean??
Nichole had a friend in HS a sweet quiet girl being raised with her sisters by her dad. Dad is a popular man, especially with teens and pre teens, and runs a teen hang out place in the old movie theater in town. Above board place. Always asking Nichole to spend the night.......blah blah blah.........Kat usually stayed here, I don't recall Nichole staying there more than once. Then Nichole has Aubrey. Suddenly we have over the top requests to "help" with the baby......oh please let us babysit blah blah blah. Of course it was all surrounded by Nichole needing support yadda yadda. Yeah. That lasted twice and I put a stop to it. I explained to Nichole that there was something very odd.........and well, my instincts screamed danger, forget inappropriate (which it was, Nichole had more than enough support from her family) Nichole was mad but she stopped letting them take Aubrey. Not too long after.........Kat gets away from her Dad and the truth comes out........and yeah. Nothing happened to Aubrey because Kat wouldn't let her out of her sight because she knew her dad all too well.......but Kat also didn't have the courage to tell Nichole the truth from the beginning. Know what I mean??
This friends dad seems like the generous with obligations attached type at the very least. If he has a victim, no one is going to believe the victim because this dude is so wonderful to the public. I've seen it too many times, doesn't matter if they're filthy rich, middle class, or even poor. Same MO.....and often, too often it works. by the way by putting his arm around Jumper and holding on long after it was appropriate was his laying claim to her in body language. Him doing so in front of her parents was a nonverbal message......See? Even your parents see nothing wrong with my claim on you.
This is why all of you were uncomfortable with his behavior. It had not so much to do with him being drunk.
Jumper is a strong girl, yes. But it can be awfully hard to stand up to your good friends dad.....especially when he has bend over backward and done so much for you. Even if you're right to do so, it feels like you're stabbing them both in the back. Very hard for people to get past.
You yourself found it extremely difficult and felt trapped and you're older and more experienced. I would really sit down and discuss this with Jumper.