A floor call and table stakes

[RR]

I get called to a 2-5 spread limit game. The pot is half way pushed and it is explained to me that the winner only had $5 left on the turn so he got out another $20. On the river he bet $5 and the other player raised to $10 and he called. How should this call go? Long time readers of this forum will know how I rule in this spot, but I thought this might create an interesting discussion.