So clearly the OP has no clue. The FG was pretty much the ONLY call in that situation. In fact, I’ve seen coaches kick the FG before they even got to 4th down to conserve time.
The last thing you want to do is use up all your time to try and score a TD because that’s what the defense wants you to do.
Will there be more time to go 50 yards for a TD after an onsides kick than driving from the 10 now?
The actual time saver is going for the TD now.
The key trade off is the probability to convert the current 4th and the current drive to a TD and get a fg after vs. the probability of converting the FG now and mounting a 50+ yard drive for a TD.
The need to convert the onside kick is a give in either case.
Keep going for the TD unless the distance required to convert the 4th is prohibitive, or you're taking a long FG anyway, and you're not saving much field position.
First it was 4th and 5 from the 10. Not a horrible conversion. Saving a lot of field position.
Go for it.
After SuaFilo's false start, it was 4th and 10. That's a tough conversion. Probably kick at that point.