Deliberate lane violations on free throw?

[billyu2]

Although I thought M&M had a good point-why the T? This scenario came to me: Team B has twice intentionally violated to negate A's strategy of missing the free throw. The officials get together and decide we're going to ignore the next violation and even inform the coaches. Fine. Nevertheless,
B2 and B3 in the lane spaces nearest the shooter both step well into the lane prior to A's free throw touching the rim. The ball clanks off the front of the rim directly to B2 or B3. Now what do we do? Chop in the clock and let time expire? Coach B is now doing cartwheels because we said we're going to ignore the violation and Coach A is mad as hell. Or do we say "ooops" and decide on a do-over this time informing Coach B it will be a technical if his/her team violates again? Seems to me we should have done the latter in the first place.