I messed up and would like to have expert's feedback on my situation

Hi all

I couldn't be more embarrassed to write this, but I desperately need your honest feedback.

I have taken GMAT 2 times: The first score was only 590, and the second one (7 months later) it went even lower--so I cancelled it. The thing is I already need to apply for scholarship and could not retake the GMAT (this year is my last chance to apply due to age, and a letter of acceptance is said to significantly increase my chance of getting the scholarship--they generally won't care about GMAT score or other aspects as long as I have the school's acceptance).

I was beyond sad when I saw my second score, and as soon as I got home, I emailed the admission manager of my first choice school, updating him with my misfortune. Why would I do that, maybe you ask? I thought I needed to know whether the situation would break my chance of admission (so my recommenders and I could know whether we should keep working on my application or shifting our focus to other options). Previously I had told the admission manager that I would make an early application (as early as this month) because I would need to know the result by mid November for my scholarship application purpose. I was worried because I only have my initial score (590 from March 2015) while I want to apply for their program that starts in January 2017. I don't want to be perceived as lazy for applying more than 12 months in advance while not attempting to improve at all. I had also told him that I would retake the GMAT before that (despite the fact that he never seems to mind my 590 score, maybe due to my long work experience). Long story short, he replied to my email very kindly and emphatically said that he could relate to my situation and would suggest me to submit my application since they did not only look at GMAT score but the whole profile.

My questions now are:
- I cancelled my second score. The admission manager knows that (he even CC'ed his reply to his senior colleague--I don't know if it's a good thing or a bad thing). If I do get an interview opportunity one day and asked about my GMAT, should I assume the interviewers know I attempted a second exam and tell them my score?
- I thought I did very poorly in my second exam because I was worried about my father (my mom called me right before I took the exam telling me that my father was rushed to the ER). In my last 3 GMATPrep mock exams I scored between 650-670 (not high I know, but I am not applying to the ivy league). But I didn't say anything about this in my email to the admission manager, fearing it would sound like an excuse. Should I maintain that in the interview or should I try to explain my situation and risk sounding defensive?
- Average undergrad GPA, low initial GMAT score, cancelled second GMAT score (and telling the admission manager about that)... Am I fooling myself that my good career trajectory (13-year work experience) will offset them?

Honest feedback would be highly appreciated.