I would seek legal help, I am in a similar situation. From my consultations with lawyers, divorce soon after green card raises red flags with USCIS (as it should), but it's not necessarily a deal breaker. But, if you have valid reasons and you can show that you made genuine efforts to maintain the relationship (with evidence such as shared leases, joint travels, etc), then you should be fine.
The point is, USCIS can accuse you of marriage fraud and potentially revoke your green card, but the burden of proof lies with them. Unlike a green card application where you must prove the legitimacy of your marriage, in an accusation of marriage fraud, they must establish beyond a reasonable doubt that you engaged in fraudulent marriage -- a serious accusation with significant consequences.
But again, I would seek legal help and even have your lawyer with you during the interview.