With the Blues leading by a point and play in Essendon's forward line with 29 minutes gone in the final term, Carrazzo gathered the ball and was tackled by Bomber Leroy Jetta.
As the ball spilled free in Jetta's tackle, his Essendon teammate Brent Stanton fell into Carrazzo's back while attempting to lay a secondary tackle.
The field umpire chose not to penalise Carrazzo for holding the ball, instead awarding the Blues midfielder a free kick for a push in the back.
Gieschen said on his weekly afl.com.au show OPSM What's Your Decision? on Tuesday that because Carrazzo hadn't had prior opportunity to dispose of the ball before being tackled, he only needed to make an attempt, not execute a correct handball or kick.
"If you've had a prior opportunity and you get tackled, you must kick or you must handball," Gieschen said.
"But in this situation, he picked the ball up and took one step, so he certainly hadn't had a prior opportunity.
"He attempts to handball, the ball gets knocked out …
"At that time we can see his opponent Brent Stanton come in from the side and fall in the middle of his back.
"We've got to protect the ball carrier in that situation, so it's a free kick to the Carlton player."
The umpires boss did, however, admit that Adelaide forward Kurt Tippett was wrongly penalised for holding the ball during the Crows' Showdown loss to Port Adelaide on Saturday night.
A 50m penalty followed when Tippett remonstrated with the umpire, leading to a goal to Port Adelaide's David Rodan that put the Power 10 points clear mid-way through the third term.
Gieschen also discussed an overturned decision that led to North Melbourne captain Brent Harvey being awarded a goal against Fremantle on Sunday afternoon.
To see Gieschen's review of all three decisions, watch this week's episode of OPSM What's Your Decision? now on afl.com.au.
