Alexander has been periodically escaping the crib for the last almost 6 months. Until recently, it was only when I was in the room with him, like if I tossed him in there while I was putting away laundry (he likes to help too much or play hide and seek in the closet while I'm trying to put things in it!). About a month and a half ago, he jumped out in the morning and I woke up when I heard a door slam. I found him in the hall bathroom with a blanket, laughing. These were mostly isolated incidents so I just made an effort to grab him as soon as he woke up so he didn't have time to perfect the jumping out technique. Until this week, that had been working well. On Thursday night, everything clicked for him and he is literally vaulting out of the crib now. That night, he scared the CRAP out of me by silently escaping and sneaking into our room. I woke up to heavy breathing and someone patting my legs. I took him back to bed, rubbed his back to fall asleep and he was out again at 5:30, which is unheard of at our house on the weekends (he normally gets up around 8:30).
Friday night was a joke: as soon as I laid him down, he was up and had a leg over the side of the crib. I tried staying in the room and he was jumping out faster than I could get up to stop him. My husband was away for the weekend so I wound up bringing him to bed with me. Oddly, he stayed in bed all night like that. Last night I dragged the mattress from our spare room into his room. This was a little better. He only woke up once at 4 a.m. when he rolled off (the top of the bed--the only place that I didn't throw pillows around). I ended up having to lie down with him to get him to relax. He went back to sleep. I didn't.

I feel like I never even went to sleep since my husband came home late that night and brought some kind of stomach flu with him so he woke me up retching all night.
Oh, to answer the obvious question: our crib does not convert. I ordered him this bed:
Lightning McQueen Toddler to Twin Bed with Lights and Toy Box but it won't be here until Monday. I'm thinking he'll love the bed. Hopefully he'll actually sleep in it. Anyone else going/went through crib jumping yet? How did your transition to the big boy bed go?
Obviously I am not good at writing short posts.
Re: Well, he's loose now (mostly a vent)
If he wakes up from a nap he either shouts for you to come get him and waits or just climbs off the bed and comes to find you... he naps with daddy during the week because he works nights. when he is ready to get up he wakes DH up and so far never once has he tried to get off the bed and leave DH sleeping unawares. He still naps around 2-3 hours and sometimes more because we have a pretty unusual routine anyway due to work etc. At weekends he tends to skip naps so this is one tired mommy with a lot of housework to catch up on lol.
His crib is still in our room, but he does sleep in the full in his room for naps and even overnight occasionally... but not by himself overnight.
I'm not terribly worried about him wandering .. that kid would just get out of bed and turn the damned TV on or find my phone or tablet and sit quite happily watching his shows as long as he had a bottle handy.
We were actually at rooms to go kids tonight looking at getting him a loft bunkbed for his room.. thinking about getting him a twin over full to replace the full we have in his room currently. He had a total blast with the stairs on the bunk beds there... very proud of his lil old self he was. I'm seriously considering getting him one and putting some kind of bed tent on the top bunk for now.
That would make the top bunk a safe play area for him until I am happy that he won't dive bomb off the top when he is in there alone.
The trundle would make a great replacement for his train table and give us more floor space too.
I wish you all well.. every kid is different so just go with your instincts.. you know your kids better than anyone.I'm just glad someone is getting some use out of their cribs lol.. we spent a tonne on a really nice mattress and it's virtually unused lol.
On a positive note, the shipping on the new bed looks like it was expedited and it should arrive tomorrow so I'm hoping that will help once he's back into a smaller, more secure space. I don't think it'll be a miracle but I think it'll be a step in the right direction.
Maybe try that so he can't keep coming out of his room once you get his toddler bed set up. Right now I'm sure it is hard bc he can't climb back into the crib. Good luck!