I have 12" I think ceramic tiles on the bathroom floor downstairs. 1 tile is loose on one corner of the tile. About 2" of grout on each side of that corner cracked and the top layer came loose. I tried to just re-grout the missing area. But of course, that re-cracked. Short of grinding the grout around that tile out and re adhering the tile & re-grouting, has anyone had a similar experience and had any luck somehow injecting a glue, epoxy or adhesive under a corner like this? I am trying to avoid having to remove the grout from completely around this one tile and lifting the tile out to re-adhere.