That....what Constant said!
I think at one point my husband wanted me to "warn" him if I saw triggers or signs of relapse. Let me tell ya, it's a lose-lose situation. Think about it: If you see the signs and tell him, he'll just deny it, get all defensive, and might even blame you for "putting those thoughts in his head". If you see the signs and don't tell him, if he relapses, why then I guess it's YOUR fault, since you saw the signs but didn't say anything!
That's why we have to detach and keep our hands off. Whatever he decides to do is his decision. You can sit back silently and shake your head to yourself, but in the end, it's all on him. Don't call his sponsor, keep working on YOUR recovery, and pray when the time comes he has the strength and enough recovery to make it through without relapsing.
Hugs,
JG