Have to say, the red I thought was harsh.
The referee was initially unmoved on the challenge and clearly unobstructed.
The 4th official has given his verdict, likely under duress from the onslaught from the bench that all came rushing out.
For me, the player who was sent off was entitled to go to the ball, as was the Crewe player. His foot never went above waist height it seems and only thing for me would be a yellow at best for C1 DP.
As for the penalty... The Crewe player blatantly kicked his leg us and hit the Stevenage player and never got in trouble for it. That was more a red card, and right in front of the referee.