i usually try to stay out of childish shit like this, but since this could be important at a later date, here it goes.
mac the only thing you did wrong, was trying to be nice, when he didn't agree to your "ORIGINAL" terms, that should have been the end of it. i have tried to help people out like that before and it never gets you anywhere.
a text is no way to do business, if you want to make something happen, pick up the phone.
this is the real issue i have here, he texted you that he was going to "take it out of your ass". that would make me drive the 50 miles to let him prove it. i can't stand people who think they are superman when they are 50 miles away. he didn't even have the balls to call you and tell you he was going to whoop your ass, he texted you. if someone's going to whoop my ass, please call me, or better yet, just show up. i am really busy and the time i wasted texting could have been used for other things.(like letting you prove you "can take it out of my ass")