Sara
I have found that by not increasing the pressure and sending you horse away he will never respect you. In the wild the ALPHA horse get its respect by sending the other horses away, so I would increase pressure. In the mortal words of Clinton Anderson " You can not control your horse and gain its respect unless you have control of his feet going forwards, backwards, left and right." Hope this helps and good luck.
Michelle Gilles
www.lchorserescue.com