Meade's oblique reference

Ethan Rafuse posted some more of Meade's snappings, including this coy one:
By the by a recent oration at West Point has made a great rumpus, & I understand the principal officers engaged in getting it up are to be relieved from duty. The oration was good enough in itself but the time, place & man were all unsuited, and the whole affair a mistake.
The reference is to McClellan. The speech is here.