Anyway, back to the hand analysis...

I check here, and I don't think it's particularly close. Why did we call with 45s in this spot? Was it to bluff a at a 5-way pot with a tricky player checking to us? I hope not.

Betting wouldn't be disastrous obviously, since we're so deep and likely would not lose more unless the perfect draw card fell on the turn, but still, it does feel like spewing to me. Check, and hope LP checks behind so you can pick up one of your many helpful cards on the turn... then you can feel free to get creative.