It depends on the exact nature of the initial situation. Was he addicted or not? This makes all the difference.

• If he was gambling occasionally as a hobby, there is nothing wrong with returning to it after a break. Many people do not consistently engage in all their hobbies for many reasons. A good example would be sports. Some people return to some sports that they have not played since they were very young.
• If he was addicted, then the situation is quite negative. People do not understand addictions at all. Even reading about addictions just gives them a superficial and false understanding of it. He has not cured his addiction, but has instead done other things that were essentially just temporary replacements for his addiction.

A truly cured addict never returns to his addiction, neither in moderation nor in any other amount. NEVER.