a.bentonab
Expert
IC 35-45-2-1
Intimidation
Sec. 1. (a) A person who communicates a threat to another person, with the intent:
(1) that the other person engage in conduct against the other person's will;
(2) that the other person be placed in fear of retaliation for a prior lawful act; or
OP's actions really tip toe the line here. On one hand, you could say that OP wanted the other person to be "placed in fear of retaliation for" his lawful acts of blocking a gas pump. Nothing illegal about being a jerk. The threat was communicated by brushing aside your cover and drawing attention to your weapon.
On the other hand, you could say that the OP wanted the other person to fear retaliation for the illegal act of violence against the OP.
The intimidation law is all about intent. I think it is clear the OP had the intent of putting the other person in fear of retaliation, but the question is whether he had to fear retaliation for a lawful act or not, and frankly the jerk didn't do anything illegal.
I guess it depends on who calls the cops first haha. How true is the saying that the first person to call the cops is the victim?
He uncovered with the intent of putting the other guy in fear. It worked.