Son's afib

I have a 15 year old son who plays high school football.  In April he had an episode of afib, which converted on it's own proably within 8hrs of going to the emergency room.  This was the first time in his life that had happened; it was not at football practice he simply came in the house at 9pm and said dad; my heart is beating fast.  He was discharged from ER sometime late or early moring after all test was normal;  we were told to follow up with a cardiologist but he was fine to continue playing football; so for the next 2 weeks he practiced intense high school football with no problems.

We then had his follow up with a cardilogist, which we explained to him what happened that night two weeks ago when he went into afib.  The cardiologist, performed some test, which were all normal, EKG and echo cardiogram where they look at the heart; all normal and no other issues.  however the cardiologist tells us; my son should stop playing football for 30 days, while he wears a holt monitor; so we agreed.  2 weeks later around 9pm, my son ran up stairs in our home and went into afib; not sure if it happened while going up the stairs or after he got up stairs but this was the second occurence, which we then sent in the electronic message via the phone.  The doctor called us back and said your son is in afib and he is going to have to be placed on meds. The afib stopped by 1pm the next day but he took the medicine around 12:30pm so we are not sure if the meds fixed or it went away on it's own.

So 2 weeks later we decided to go for a second opinion at emory in atlanta.  We did not want our son to be on meds the rest of his life; it just seem like the first cardilogist wanted him on meds and there was nothing else.  Okay the cardiologist at emory recommended an abalation.  I did not understand, why she recommnded an abalation, when he has only had 2 episodes of afib; none had happened sense he was on the meds 50mg a day. She said that sense it happened twice she expected she would find a problem duing the EP study.  To make a long story a little shorter, we took the doctor's recommendation and decided on having the abalation so our son could continue with his high school sport career and to get him off of meds.

Well, they spent the first 3.5 hours of a 6 hour procedure trying to get him to go into afib, which never happened but they discovered atrail flutter.  She came out to ask if we wanted to proceed; which I am not sure why she asked us this question.  We did not know what is best but she recommended ablating the atrail flutter because it could be causing his afib so we let her continue the procedure and she successfully ablated the atrail flutter.

Here is my questions; is my son any less at risk for going into afib?  Did he really need this procedure in the first place?  the doctor who performed the procedure said he can stop his med and return to normal activities, inlcuding playing high school football with no limitations.  But I have read that atrail flutter may not correct afib; if so then why would the doctor feel that my son is no longer at risk?  I am confused so we have held him out of football until his follow up, which is this Tuesday.  I need to ask her these questions because it makes no sense; atrail flutter may or may not have fixed his problem; right? To me that means we are in the same boat.  But it's been about 3 weeks since he's had the procedure and no problems at all; he's been playing full court basketball and ripping and running with no issues but I just have not allowed him to begin football again until I get some more answers.  I have no way to measure either because he has never had any issues while participating in any sports; only happened around the house; twice so how do you even know he's okay?  just confused