Roger, maybe there is a glue or epoxy solution that would work. If not, there is another solution to possibly consider, keeping in mind that I don't have any actual experience with Ross switches. Anyway, here's my thought.
If you were to loosen the 4 rail clips, circled in blue (maybe they're staples) on both sides of each short rail, it appears that the rails could slide out the end of the switch. You could then file off the offending rail flange indicated by black smudges where the red arrows are pointing, slide it back into place and re-tighten the clips. This should create a sufficient gap between the rails where they meet at the frog.
You really only need to file one of them back. Pull the spikes out of one side of the rail, pull the rail file the edge and put it back. You dont need to re-glue it, but if theres glue on the bottom of the rails, just touch the rail flange above the tie with a soldering iron, it'll melt the glue and re-attach it.