Precisely. The JnJ franchise is for sale because it is now turning from a 'Cash Cow' into a 'Dog' (on the BCG growth-share matrix) so JnJ probably want to realise the remaining value from it before its starts to make their 'Return on Asset' matrix look less flattering, which would depress their fundamentals, and so might erode their share price.
The DECN litigation is no barrier to a sale of the franchise. The offer made was binding. So there is no impediment. Occam's razor.