the 1:50 at market raisen.. as far as i could tell, it was because of where the horse fell (i don't remember the name sorry, was watching on racing uk which doesn't have a clickable horse names/results like ATR does). so they had to bypass the fence next time around and were meant to run up the run-in for the hurdle course instead, but it wasn't clear to the jockeys, who bypassed the fence but then carried on the chase course and there wasn't much room to miss the screens, presumably around the horse. on the last circuit they did go onto the hurdle course to the finish and the screens were still up. presumably it was a safety issue that they didn't wave the jockeys further away to the adjoining course. i looked on the racing post website to see if there was any news but it doesn't seem to be on there as yet.