[3][4] Wijntuin was a member of the Progressive Surinamese People's Party (PSV).

He tried to gather support from the European and South American Christian democrats but found himself increasingly isolated.

Wijntuin returned after the restoration of democracy in 1991 but refrained from politics, and started to focus on writing books.

The foundation operates a home for stray children, and was chaired by Wijntuin until his death.

[7] In 1998, Wijntuin wrote Louis Doedel, martelaar voor het Surinaamse volk,[10] about Louis Doedel, a union leader who was involuntary committed in psychiatric hospital Wolfenbüttel [nl] on 28 May 1937 by Governor Kielstra.