Don’t panic.
From years of bartending experience…
Get your worst rag. I mean the oldest and ugliest on you’ve got. With one end of the rag, gently wipe the glass pieces into one corner of the sink, then slowly up the side of the sink, and then wrap the tail end of the rag around to cover and throw the entire package away. Now, not only is your sink glass-free, but you’ve gotten rid of that nasty rag. What were you thinking keeping such an ugly rag around?