Standing in crib

Thomas is now standing in his crib.  He started out pulling up on his knees and then 2 days later....standing!  We have even caught him standing holding on with one hand or for a split second letting go and standing by himself.  This has been very exciting for all of us, including Thomas.  He is so excited that he doesn't want to put himself to sleep anymore.  :-)  One of us has to stay in the room for about 30-45 minutes coaxing him to lay down until he falls asleep.  Otherwise, he will stand up crying.  Yes, we tried the wait 5-10 minutes, go in an sooth him and then wait again.  He can also get down from the standing position on his own.  Sometimes he may bonk his head, but he can do it.  From what we have heard and read, this phase will pass.  

But isn't he cute standing?  We think so, but then again he is cute doing anything!