@ ll124 Make sure your own finances are protected, ie. joint accounts, so that when it hits the fan again then he has only done his own salary.
Actually if he is genuine about stopping and staying stopped, then he will have no problem having his salary paid straight into your account so you can pay mortgage/rent. But if he protests then you know he is not ready to give it up yet.
I have also known gamblers take out loans in their partner's name. I advise you to setup an account on CheckMyFile.com and check your credit rating (which will be affected by his). Free for 30 days. Better to know the facts.
Highly recommend he also does the same (which will show all HIS bank and card accounts) so again if he protests then I would insist. You need assurances and your own evidence that it won't happen again.
As for controlling finances, checking his account to see if anything has gone out is not control? Control is where all money coming into the household comes to you and you alone. You then pay bills, fill up the car, then give him what he needs on a daily basis (for which he provides receipts without fail). This is how the majority of recovering problem gamblers have to work, as the partner has been told too many lies. Trust is no longer the goal, its 100% Transparency.
If he's been on the gambling rollercoaster then its no suprise he is on meds for anxiety. And the thought of the debts will make him want to gamble more. He would definitely benefit from a GA meeting - even one - to enable him to relate and open up to others.
Let me know if any new developments, all the best