ok so this time lag thing....


That's a pretty extreme example alright. Have you read the articles? Help>ask a question>Lag. There must be 3 or 4 of them. Almost sounds like you had a temporary disconnect that delayed receipt of a move.
https://support.chess.com/article/423-why-did-the-clock-times-suddenly-change-the-clocks-seem-broken
Might be something useful here...
https://support.chess.com/article/213-how-do-i-fix-my-disconnect-lag-issues

Thanks.... But i thought a time lag only delayed the appearance of a move on the clock rather than actually losing me that time

And that's why I thought you might have had a temporary disconnect...the move has been made, the clock at the server is ticking, but you haven't gotten it yet. That second link I gave you mentioned some typical ways that can happen. Maybe someone who actually understands all this can weigh in; I've got an analog mind in a digital world...sigh.

Thanks.... But i thought a time lag only delayed the appearance of a move on the clock rather than actually losing me that time
Only up to a point. If your connection is really bad, then it will supersede the lag compensation and you will start to lose time even if playing instantly.