"equivocal stance" is correct and usable in written English.
It is an idiomatic expression that refers to a position or attitude that is uncertain or ambiguous, allowing for both positive or negative interpretations. For example, you could say, "John took an equivocal stance on the issue, neither fully endorsing nor rejecting it."
Poland's Catholic primate, Jozef Glemp, the cardinal of Warsaw, has long taken an equivocal stance on anti-Semitism.
Voters reacted to his equivocal stance on Prohibition, to his Irish heritage, even to his New York roots.
It took an equivocal stance toward the 1993 peace accord between Israel (signed for the country by the Labour-led government of Prime Minister Yitzhak Rabin) and the Palestine Liberation Organization (PLO).
Panorama, reporter John Ware is thought to challenge Sacranie over his boycott of this year's Holocaust Memorial Day, his attendance at a memorial service for Hamas leader Sheikh Yassin and his equivocal stance on Palestinian suicide bombers.
The Times, which endorsed Quinn in the primaries last year (and then endorsed de Blasio in the general election), has adopted an equivocal stance, recently comparing the new mayor to a student driver.
It has managed to avoid a rift so far only by adopting an equivocal stance, distancing itself from the Hizbollah attack while condemning Israeli aggression and calling for ceasefire.
Her stance, and her seemingly equivocal attitude towards MacDonald's apostasy, reduced her standing in her own party for decades, so that when Barbara Castle was appointed as Minister of Labour by Harold Wilson in 1968, she insisted that the ministry's name be changed to "Department of Employment", for fear of association with Bondfield's term in office.
Unlike these stances, the organizing committee's is equivocal.
Apart from his stances on immigration, he has been very equivocal on public policy pronouncements.
General Musharraf's problem has always been that the army he heads is too close to the extremists, whom it uses in Kashmir and Afghanistan, and that his government partly depends on the support of religious parties.General Musharraf's stance on a recent Islamic bill has been less equivocal.
