Stealing blinds whilst disconnected

[zoidace101]

This issue may have already been covered, but i am new to 2 + 2.

I was recently heads up in a 200 (approx) MTT when the other player disconnected. I slowed down for about a minute, but then deceided to steal every pot. After a few minutes the other player returned, and argued that i had been unfair to him (amongst other things). To be hhonest if i were in his position i might say the same thing.

When the table is full and a player disconnects no-one thinks twice about stealing blinds. MY question is, is it ethical to steal blinds after the other player has disconnected when they are so big heads up in order to win tourny? I did give him a little while to connect.