Literally the only movie I've ever turned off part way through. Youd think that the producers would have, i don't know, accurately depicted the force the movie is named after.
Once Sandra catches his broken teather he comes to a complete stop. The line is taught, so effectively they're both moving in roughly the same orbit as the station they're attached to. That means they're also moving at the same speed as the station. The net forces at that point for Clooney's character are effectively zero (not exactly zero as there is still a bit of atmosphere causing drag at iss heights).
In real life, he's "safe" in that scenario. In the movie, some magical force continues to be applied to him which ends up overpowering his grip, which was totally fine seconds before, and he falls to his death.
I dont know if the science gets better after that, never watched past it.
I would interpret that as still some residual force being there but dampened by the parachute lines (meaning a ruler would still see movement relative to the station) and thr amount of screen time couldnt show them drifting away from the station. This would be confirmed by the taut line and the "recoil" after Clooney let loose.
But the force for the amount of time shown is still too much to be logical.