If we did that and then faced an Illinois and Wisconsin in the tournament, our RPI will only change about .001 to .0015. That will still keep us around #50 and possibly higher with other teams losing. There are 36 at-large spots and at least 14 automatics are likely to be held by top 50 RPI. So 50-53 is going to be the cut-off point and there could be 1 or 2 exceptions.
I have a hard time believing that a Big 10 team with a winning record, 3 top 50 wins, and one of the top 36 at-large RPI's would be bumped and if anything would be in position to be moved up a little bit. Of course we are talking about being right on the line here and a couple lower teams pulling upsets and adding additional bids for lower ranked teams will have an effect. On the prediction site someone posted, the 2-2 and 1-1 scenario gives us a 74% chance of making the NCAA.