Comment Re:NASA Link to the story (Score 3, Informative) 109
The Soyuz has 3 sections: orbital module, descent module, and service module.
After undocking the Soyuz will fire its engines to deorbit. Before re-entry, both the orbital module and service module will be jettisoned and will burn up on re-entry. The descent module survives re-entry and parachutes to a landing.
The orbital module and descent module are both pressurised. The article's wording might be considered to be wrong since it could be argued that even the 2 modules that burn up actually return to earth. Based on the article and design of the Soyuz, they are implying the leak is on the orbital module.
So, the problem will be solved when the Soyuz undocks.