He may have buckled, but I wouldn't call it a choke. Both players had chances and he just didn't come through.
Corretja played great. I remember this match and ever since then I had such a high level of respect. He really could adjust his game to the quicker hardcourts(especially back then) and really played aggressively. I was pulling for him in the French final.
He hits a lot of great shots, shows his variety. This match is one of my favorites of all time.