Yes bad players do these things all of the time.

Our commitment level should be determined before we act.. and the next card can change that commitment level. There really shouldn't be any "tough" spots or surprises in ring games because we have already decided what to do if our opponent does any number of things before we even act.

"Pot committed" seems to be more of a tournament phrase where you would be crippled if you bailed out anyways, so you might as well take the risk now while there are chips to be won. We can reload in ring games.

There are times in ring games that we have to make crying calls due to pot odds, though. Say you have 3-1 odds or better on the river and even though you know you are beat a lot, if you think he is bluffing 10% of the time you only have to be good like 20% or less of the time to break even... so you call. I guess you can call that pot committed if its for the last of your chips.. but we shouldn't of gotten in that spot anyways.. so.. back to talking about what bad players do.