Leg injuries are hard to deal with! I hope they get it taken care of. Horses can't servive on three legs like a dog can, they get an infection in a leg, and it's pretty much the end for them (if it get's bad enough of course)
Geeze, what's up with horses fighting? My MIL's and my horses (they are all owned by her, I help do every thing with them, and ride with her, she got the newest one so I could ride it, since selling my horse, so technecially I don't have a horse but, they are mine, too) got into it today. The two gelding were going crazy! It's not a pretty site when they fight, they were rearing up at each other and biting, and the mustang got turned around and pinned to the fence, he can buck! He kicked the appy in the face, he has a gouge down his face! There is absolutly NO way to get near them and break up a fight, you think trying to break up a dog fight is dangerous, horses will (can) kill you in a second! I got a natural horsemenship carrot (it's like a whip just not used as one) and snapped that at them, and they turned on the mare, she got stuck in the mud (it is frozen, but they break through and sink) so she went down in the fence, it's barbed wire she she got pretty cut by that, and her ankles are swollen probley from fallen while stuck in the mud, it's hard mud so her feet are cut too. The fence is broke the horses are cut, and almost broke! It was terrible, it seemed like it was forever getting them settled down, I finally got in there (I thought my MIL was going to kill me more then I thought the horses would, LOL! She was like, let them go, if they kill each other oh well! I couldn't so I just got inbetween them with the carrot and got a hold of the mustang, he likes me, so he followed me in the barn and appy just hung around by the hay feeder, while MIL got some grain, the mare finally got up and went to eat too. So we spent the evening cleaning them up too. We weren't out there so we don't know what happened. We really think they just got too rough playing, but when they got after the mare (kind of my fav, last summer we almost lost her, because the neighbors dog attacked her, and she fell and had a bad head injury and could walk without falling, and couldn't eat right. MIL was going to put her down a couple times, but I begged her to give her more time, and worked with her, she still can't be ridden, and isn't steady on her feet, but I couldn't see killing her (the dog mabey) I weren't having it!
I hope your boss' horses are doing good, or they find a home for ladybug (we had a hackney named lady elaine, I called her ladybug!) if it is for the best, the sooner the better.