Just play it out until you reach the 50 move rule and hit the draw button. Unless he thought he saw something he could do about it, yes it is bad sportsmanship.
Is declining a draw in this situation bad sportsmanship

Just play it out until you reach the 50 move rule and hit the draw button. Unless he thought he saw something he could do about it, yes it is bad sportsmanship.
Ahh, I did not know the 50 move rule applied to live chess as well. I thought it was just a OTB tournament rule, lol.
Well then I am an idiot. I certainly had enough time to insta-move my rook 50 times.
Still a bit douchy though.

Did you click the offer draw button after move 50 ?
The system should have given an instant draw...threefold repetition.
I had about 1:45 left on the clock when I found a perpetual...
After realizing he was not going to accept the draw offer, i went for broke hoping he would blunder into a mate.