Bad beat for sure but that's why you never ever lay big juice and take back 1½ goals. It's the absolute worst bet in sports, bar none. Period.
Actually, this is the third time I'm testing this, and so far this is the only one that lost. I'm not laying the big juice, because I'm parlaying them together, so I get close to even money on each.
I agree, betting the +1.5 individually is going to kill your bankroll in the longrun.
EDIT: If you look at all games where one team pulls the goalie at the end, you will find the vast majority of them the EN goal never happens. So really, the probability is on your side in these cases