I agree, and in that situation, I'm often in the holding zone when possible (assuming there was no immediate play at HP). If my partner doesn't look like he's going to make a call, I'll get in there and do it the wrong way.
However, it's my understanding that both of you could get dinged in your review for PU making that call at 3B. The important thing is to get it right, of course, but I'll be damned if I'll get dinged for something my partner failed to do (not that my last review was worth a darn anyway - a 3 for hustle? I'm the fastest ump on our crew! BS!).
Any UICs care to comment on that kind of situation? How would you grade if you saw that?