Can I save grout damaged by low pH?

[PoolDoc]

Good luck!

[vinper]

at least it will be easier , to replace if the thinset comes right off.. usually tile is adhered with thinset . grout is only between the tiles not holding them on

[Fixit]

My hope is that the thinset will hold true so the tiles stay put and all I have to do is scrape the grout out. The tiles are penny rounds :/