Rob Gronkowski says he's ain't mad at his big bro for stirring up drama with the Patriots -- claiming Chris Gronkowski just got caught up in the moment when he shaded Rob's team on the radio.
Backstory ... Chris appeared on "Kirk & Callahan" on WEEI this week and told the guys Rob had issues with the team during the off-season that seemed to center on his contract.
Essentially, Chris said Rob wanted more freedom, more respect ... and more money!
"He wanted to get what he deserved.