I see two problems here. One is that some applications ask you if you've ever been asked to resign by an employer. They may also ask if you've ever failed to complete a part 121 training program/event.

But bottom line, you have spent a short amount of time at two airlines (and i'm certainly not one to judge that), and employers are probably going to want to know why it was so brief. You may be able to tell them it was for personal reasons, or even that you didn't fail a training event. But if they get a copy of your training records from PSA, which I believe they will through PRIA, those may have instructor notes on there, documenting the problems you were having with training. Then you'd look dishonest.