Wasn't too sure where to put this, so if its in the wrong spot, sorry!
So, we currently moved two of our horses down to another property by a main road. They have been there most of the summer and we haven't had any issues. I had some problems tonight that have me and my family stumped.
Tonight I went down there to ride my gelding, had no problem catching him but he kind of eyed his halter a bit. I lead him over and groomed him down, checked him over for any cuts, checked for soreness ect. I pull out my saddle pad and check for anything on it (hay, burrs ect) and when I went to put it on he eyed that as well and flinched a little when I put it on him. I watched him for a second and pulled out my saddle, didn't seem to mind it being put on him so I slowly cinch it up. Next thing I know he is TENSE, like 2 seconds away from bucking. He kept humping up, I knew he wanted to buck bad but knew better than to do it. I know his saddle fits, it was just checked. At that point I lead him away and just watched him move around at the walk and trot. He didn't seem to have any issues. I then picked up a stirrup and tossed it into the seat (something I always do before each ride) and got drug. He started that whole humping up thing again so I just took his saddle off and did ground work. He started acting like I was going to beat him! He was absolutely terrified! If I asked him to move his hindquarters ( which all I have to do is lean one way and do a hand gesture and he moves) I got drug. So finally I just sat on my truck holding his lead rope, petting his face until he calmed down.
Eventually he was back to normal so I pulled out a bridle that I wanted to check the fit, as soon as he heard the jingle of the bit he ran backwards dragging me about 15 feet. I started asking my sister about it, when I noticed his tail was gleaming. Like showsheen gleaming. Sure enough his tail and even his mane which is roached had some kind of hair oil on it. Same for my sister's mare. I smelt his tail, expecting either regular horse smell or hair product, but there was nothing! It didn't smell at all, not even like horse.
I talked to my neighbor (who lives right next to the property, our land is always within his view) and he thinks someone is messing with them, but said he hadn't seen anyone except us down there. He promised to keep a close eye on them for us though.
Anyone got any ideas?