Bricked is when is shuts-off and will not turn back-on, even after a charging.
What I think you're referring to is similar to a surge, where it will jump forward for a split second, then drop off.
If it is a surge, that's part of board feedback, letting you know to slow down, that you're over driving the battery for the power that is left. Surge, like pushback, is another way for the board to tell you to slow the fuck down, that the battery doesn't have enough juice for any number of reasons.
I'm assuming your hitting the pavement is a faceplant. In that case, you need to get Fangs, if you haven't already. Fangs will allow the board to decelerate more slowly, and not catapult you off the board.