I hate it when that happens...
I have a similar setup...two of my feeds are at my parents place. My Mom has gotten very good at working the two scanner radios, adding frequencies, changing frequencies, telling the status of the Rasp Pi.... I call her up and tell her what to do and most of the time any issues get resolved over the phone. Of course, those two feeds aren't thousands of miles away
Funny though, I would have expected that antenna splitter to be a little more robust than that...ah well, stuff happens...
Ron