"I would keep your thoughts to yourself . You do yourself & colleagues a disservice by going down the line of "them and us"! BTW I think your assistance is the least you could do for all the breakfasts the crews left you guys!"
As a matter of fact, I think he actually explains the current feeling in the engineering department very well. You've done yourselves no favours.
You, the crew, are the ones you have isolated yourselves from the rest of the company, not Tom/Grease 7/whoever it is.