Dirk and Liesbeth De Coninck-Stryckers have sent me the Flemish Bear Dance (Barentanz), which, going back to Crowdercref's original query, is the same dance. Both are members of an Antwerp dance team and have studied the dance very carefully. Liesbeth says this is a children's dance. The melody, while similar, deviates from the 70s tune most strikingly.

THE STEPS:

Start in a circle of a (non-defined) amount of dancers
steps to use: walking steps

description of the dance:

introduction (music)

refrain: 16 walking steps clockwise, while stamping left's foot.
Then 16 walking steps in the other direction, while stamping left's foot.

               All the time: give hands

1st figure: (no giving-hands): 16 jumps on the left foot, while stretching the right leg so it's not touching the ground

Refrain + 1st fig. +

2nd figure:          16 jumps on both feet, forward and back, clapping hands every time you jump forward

Refrain + 1st fig. + 2nd +

3rd figure: sit on your left knee and bounce 16 times softly with the music

Refrain + 1st fig. + 2nd + 3rd +
4th figure:          Sit on both knees and jump softly so the knees rise from the ground 8 times.

Refrain + 1st fig. + 2nd + 3rd + 4th +
5th figure:          slam the left hand on the ground 16 times (you still sit on your knees – 4th figure)

Refrain + 1st fig. + 2nd + 3rd + 4th + 5th +
6th figure:          slam both hands on the ground, following the rhythm of the music.

Refrain + 1st fig. + 2nd + 3rd + 4th + 5th + 6th +
7th figure: softly knock your head on the ground

Final chord: make a somersault